TensCare TENS One User manual

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INSTRUCTIONS FOR USE
READ CAREFULLY BEFORE USE

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QUICKSTART GUIDE
Connect the unit with the
electrode pads
Place the electrode pads around
the area of pain
Rotate one of the top control
knobs to switch on
Adjust the settings by rotating the
pulse rate and pulse width
control knobs
Regulate the output intensity
for each channel with the top
control knobs
Select a mode by pressing the
MODE button
1
2
3
4
5
6

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Dear Customer,
Thank you for choosing TENS One. TensCare stands for high-quality,
thoroughly tested products for the applications in the areas of gentle
electrotherapy, muscle toning, continence management and pain relief
during labour.
Please read these instructions for use carefully and keep them for later
use, be sure to make them accessible to other users and observe the
information they contain.
Best regards,
Your TensCare Team

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Contents
1. INTRODUCTION ................................................................................................. 5
2. INTENDED USE .................................................................................................. 5
3. TENS ONE FEATURES ...................................................................................... 5
4. HOW “TENS” WORKS ........................................................................................ 6
5. CONTRAINDICATIONS, WARNINGS & CAUTIONS .......................................... 7
6. INFORMATION ABOUT THE PROGRAMME SETTINGS .................................. 9
7. MODES ............................................................................................................. 10
7.1. PARAMETERS ........................................................................................... 10
7.2. SELECTING THE PARAMETERS .............................................................. 11
7.3. RECOMMENDED SETTINGS .................................................................... 11
7.4. MODE USAGE............................................................................................ 12
8. ELECTRODE PADS .......................................................................................... 12
8.1. PAD POSITIONING .................................................................................... 12
8.2. PAD ADVICE .............................................................................................. 12
9. CONTENT ......................................................................................................... 13
10. UNIT INFORMATION ..................................................................................... 14
10.1. CONTROLS & DISPLAY ......................................................................... 14
10.2. OPERATING INSTRUCTIONS ................................................................ 15
11. SETTING UP AND USING THE TENS ONE.................................................. 16
11.1. INSTALLATION OF BATTERIES............................................................. 16
11.2. CONNECTING LEAD WIRES.................................................................. 17
11.3. PREPARING FOR SESSION .................................................................. 17
11.4. TREATMENT SESSION .......................................................................... 18
11.5. AFTER YOUR TREATMENT SESSION .................................................. 18
12. CLEANING & STORAGE ............................................................................... 19
13. EMC ............................................................................................................... 19
14. DISPOSAL OF WASTE ELECTRICAL AND ELECTRONIC PRODUCTS
(WEEE) .................................................................................................................... 19
15. ACCESSORIES ............................................................................................. 20
16. WARRANTY................................................................................................... 20
17. TROUBLESHOOTING ................................................................................... 22
18. GENERAL SPECIFICATION.......................................................................... 23

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SYMBOLS USED
Attention! Please follow the instructions in the user’s instructions for use.
TYPE BF EQUIPMENT: Equipment providing a degree of protection against
electric shock, with isolated applied part. Indicates that this device has conductive
contact with the end user.
This symbol on the unit means “Refer to instructions for use”.
Temperature Limitation: indicates the temperature limits to which the medical
device can be safely exposed.
Lot Number: indicates the manufacturer’s batch code so that the batch or lot can
be identified.
Humidity Limitation: indicates the humidity limits to which the medical device can
be safely exposed.
Serial Number: indicates the manufacturer’s serial number so that a specific
medical device can be identified.
Do not dispose in household waste.
Catalogue Number: indicates the manufacturer’s catalogue number so that the
device can be identified.
Atmospheric Pressure: indicates the atmospheric limits to which the medical device
can be safely exposed.
Date of Manufacture: indicates the date which the medical device was
manufactured. This is included within the serial number found on the device
(usually in the battery compartment), either as “E/Year/Number” (YY/123456) or
“E/Month/Year/Number” (MM/YY/123456).
This medical device is indicated for home use.
This medical device is not water resistant and should be protected from liquids.
The first number 2: Protected against access to hazardous parts with a finger,
and the jointed test finger of 12 mm ø, 80 mm length, shall have adequate
clearance from hazardous parts, and protected against solid foreign objects of 12.5
mm ø and greater.
The second number 2: Protected against vertically falling water drops when
enclosure is tilted up to 15˚. Vertically falling drops shall have no harmful effects
when the enclosure is tilted at any angle up to 15˚ on either side of the vertical.
LOT
S/N
REF
IP22

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1. INTRODUCTION
Device Description & Principles of
Design
The TENS One is an accurate and
versatile, digital TENS unit that is easy
to use, with simple settings and rotating
strength control knobs. It can help
manage the pain from a wide range of
conditions.
Chronic pain: back pain, arthritis,
rheumatic pain, lumbago, hip pain,
osteoarthritic pain in the knee and
sciatica central pain.
Musculoskeletal pain: fibromyalgia,
falls, sprains, direct blows to muscles
and auto accidents.
Acute pain: Dental and facial pain, neck
pain (back of the neck), postoperative
pain, migraine and neuralgias.
TENS machines can be used alone for
pain relief or be combined with other
treatments.
2. INTENDED USE
TENS One is intended for the
relief of pain associated with
sore or aching muscles of the lower
back, arms, or legs due to strain from
exercise or normal household and work
activities.
The device is suitable for use by all who
can control the device and understand
the instructions.
Do not use the device for any purpose
other than this intended use.
Warning: Not suitable for use
in children without medical
supervision.
3. TENS ONE FEATURES
•Dual Channel
Two independent channels with four
electrode pads to treat two areas at the
same time.
•Comfortable Stimulation
Gentle TENS stimulation with 20 steps
of intensity. The multi-turn rotary digital
control reduces the risk of sudden
changes normally associated with this
type of control.
•Manual TENS with 3 Modes
Including Burst mode (B),
Normal/Constant mode (N) and
Modulation mode (M).
•LCD Screen
Clearly shows the operation of the unit
and the programme and intensity being
used.
•Treatment Timer
The user can manually select a
treatment time of C (Continuous) or 15,
30, 45, 60 or 90 minutes.
•Easy Start Mode Memory
Automatically starts in the last mode
and setting used.
•Detachable Belt Clip
Enables the user to clip the unit onto a
belt.

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4. HOW “TENS” WORKS
T.E.N.S. stands for Transcutaneous
Electrical Nerve Stimulation. T.E.N.S.
stimulates your body’s own natural
defences against pain, namely the
release of endorphins. TENS is totally
safe and has been used successfully by
thousands of pain sufferers.
TENS sends a gentle stimulation
through the skin which works in
TWO ways:
Pain Gate
It stimulates the
sensory nerves,
which carry touch
and temperature
signals. These
nerves go to the
same connections
in the spine as the nerves carrying pain.
A strong sensory signal will block the
pain signal travelling up the spine to the
brain. This is known as closing the
“Pain Gate” and takes effect quite
quickly after the unit is switched on.
When the gate is open, pain messages
get through to the brain and we feel
pain. When the gate is closed, these
pain messages are blocked and we do
not feel pain.
Evidence suggests that TENS produce
pain relief in a similar way to ‘rubbing
the pain better’. The pain gate can be
closed by activation of
mechanoreceptors through ‘rubbing the
skin’.
Scientifically, the pain gate works by
release of chemical in the synapse at
spinal level that inhibits transmission of
pain signal.
Endorphin Release
At low frequency
settings, and
slightly stronger
outputs, TENS
drives the motor
nerves to produce
a small repetitive
muscle
contraction. This is seen by the brain as
exercise, and this promotes the release
of endorphins - your body’s own natural
pain killer. The relief builds up and
normally takes about 40 minutes to
reach a maximum level which can last
for hours after the machine is switched
off.
By using TENS, you can expect to
achieve a significant reduction in pain -
if not complete relief from pain.
•TENS is effective for pain from a very
wide range of causes.
•TENS machines can be used to help
reduce pain from problems in
muscles, joints and nerves.
•It can be also used for people with
musculoskeletal pain such as long-
term (chronic) back pain or knee joint
arthritis. They are also often used for
pain relief in the early stages of
labour (see perfect mamaTENS),
particularly whilst a pregnant woman
remains at home.
•TENS may also be used to treat
many types of pain, such as migraine
headaches, period pain and
endometriosis (see Ova+), cystitis,
sports injuries, fibromyalgia and
neuralgia, plantar fasciitis, post-
operative pain, TMJ disorder,
diabetic neuropathy, osteo-arthritis

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and sometimes non-painful
conditions such as travel sickness.
•You can use low frequency (<10 Hz)
programmes on acupuncture points,
to achieve similar effects to
acupuncture.
•With neurogenic pain (caused by
inflamed nerves) such as shingles
and neuralgia, TENS may start by
increasing the pain. We recommend
that you only use TENS for these
conditions under medical
supervision.
•You can safely use TENS as long as
it gives you pain relief. The effect
may wear off after a few hours (this
is called “accommodation”). If this
happens, take a break of an hour or
so before trying again. If you use
settings that cause muscle
movement for more than 40 minutes,
you may experience aching muscles
a few hours later.
5. CONTRAINDICATIONS,
WARNINGS &
CAUTIONS
In this manual:
A Warning is used when failure
to follow the instructions may
result in serious injury or death.
A Caution is used when failure
to follow the instructions may
result in a minor or moderate injury, or
damage to the device or other property.
Notes are used to provide
clarification or
recommendation.
CONTRAINDICATIONS:
Do not use this device if you have a
cardiac pacemaker, implanted
defibrillator, or other implanted metallic
or electronic device. Such use could
cause electric shock, burns, electrical
interference, or death.
WARNINGS:
If you are in the care of a
physician, consult with your
physician before using this device.
If you have had medical or
physical treatment for your
pain, consult with your physician before
using this device.
If your pain does not improve,
becomes more than mild, or
continues for more than five days, stop
using the device and consult with your
physician.
Do not apply stimulation over
the front of your neck because
this could cause severe muscle spasms
resulting in closure of your airway,
difficulty in breathing, or adverse effects
on heart rhythm or blood pressure.
Do not apply stimulation across
your chest because the
introduction of electrical current into the
chest may cause rhythm disturbances
to your heart, which could be lethal.
Do not apply stimulation over
open wounds or rashes, or
over swollen, red, infected, or inflamed
areas or skin eruptions (e.g., phlebitis,
thrombophlebitis, varicose veins).
Do not apply stimulation over,
or in proximity to, cancerous
lesions.
Do not apply stimulation in the
presence of electronic

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monitoring equipment (e.g. cardiac
monitors, ECG alarms), which may not
operate properly when the electrical
stimulation device is in use.
Do not apply stimulation when
in the bath or shower.
Do not apply stimulation while
sleeping.
Do not apply stimulation while
driving, operating machinery,
or during any activity in which electrical
stimulation can put you at risk of injury.
Caution Do not permit use by
children unable to understand
the instructions or persons with
cognitive disabilities, i.e.; Alzheimer’s
disease or dementia.
Consult with your physician
before using this device
because the device may cause lethal
rhythm disturbances to the heart in
susceptible individuals.
Apply stimulation only to
normal, intact, clean, healthy
skin.
No modification of this
equipment is allowed.
PRECAUTIONS:
TENS is not effective for pain of
central origin, including
headache.
TENS is not a substitute for
pain medications and other
pain management therapies.
TENS devices have no curative
value.
TENS is a symptomatic
treatment and, as such,
suppresses the sensation of pain that
would otherwise serve as a protective
mechanism.
Effectiveness is highly
dependent upon patient
selection by a practitioner qualified in
the management of pain patients.
The long-term effects of
electrical stimulation are
unknown.
Since the effects of stimulation
of the brain are unknown,
stimulation should not be applied
across your head, and electrodes
should not be placed on opposite sides
of your head.
The safety of electrical
stimulation during pregnancy
has not been established.
You may experience skin
irritation or hypersensitivity due
to the electrical stimulation or electrical
conductive medium (gel).
If you have suspected or
diagnosed heart disease, you
should follow precautions
recommended by your physician.
If you have suspected or
diagnosed epilepsy, you
should follow precautions
recommended by your physician.
Use caution if you have a
tendency to bleed internally,
such as following an injury or fracture.
Consult with your physician
prior to using the device after a
recent surgical procedure, because
stimulation may disrupt the healing
process.
Use caution if stimulation is
applied over the menstruating
or pregnant uterus.

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Use caution if stimulation is
applied over areas of skin that
lack normal sensation.
Caution Keep away from
children under 5 years of age.
Long cord - risk of strangulation in
infants.
Use this device only with the
leads, electrodes, and
accessories recommended by the
manufacturer.
Caution Strong
electromagnetic fields (electro-
surgery/ microwave cookers/ mobile
phones) may affect the correct
operation of this unit. If it appears to
behave unusually, move it away from
these devices.
TO KEEP YOUR DEVICE IN GOOD
WORKING ORDER, OBSERVE THE
FOLLOWING ADDITIONAL
CAUTIONS:
Caution: Do not immerse your
device in water or place it close
to excessive heat such as a fireplace or
radiant heater or sources of high
humidity such as a nebulizer or kettle as
this may cause it to cease to operate
correctly.
Caution: Keep the device
away from sunlight, as long-
term exposure to sunlight may affect
the rubber causing it to become less
elastic and crack.
Caution: Keep the device
away from lint and dust, as
long-term exposure to lint or dust may
affect the sockets or cause the battery
connector to develop a bad contact.
Caution: Temperature &
Relative Humidity of storage: -
25°C to +70°C, up to 93% R.H.
Temperature & Relative Humidity of
transportation: -25°C to +70°C, up to
93% R.H.
Caution: Do not attempt to
open or modify the TENS unit.
This may affect the safe operation of
the unit and will invalidate the warranty.
6. INFORMATION ABOUT
THE PROGRAMME
SETTINGS
The Frequency and Pulse Width
settings can be adjusted which allow for
different sensations through the
electrode pads and suppress pain in
different ways.
•Frequency (measured in Hz -
pulses per second)
PAIN GATE: A high frequency of 110
Hz is good at blocking pain signals.
ENDORPHINE RELEASE: A low
frequency of 4 or 10 Hz allows for the
release of endorphins, the body’s
natural morphine-like substances.
•Pulse Width (measured in μs -
millionths of a second)
The TENS One unit has pulse widths of
50 to 250 μs. Generally speaking, the
higher the pulse width, the more
"aggressive" the stimulation feels, and
eventually, if the pulse width is set high
enough, it will usually elicit a muscle
contraction, which is typically not the
desired result with a TENS unit.
However, if the pulse width is too low,
the patient may not perceive the
stimulation. Pulse Rate is important
because different frequency settings
target different nerve groups and the
setting will determine if the "Gate

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Theory" or "Endorphin Theory" of TENS
will be used.
•Constant and Burst Modes
Constant mode is when the sensation is
continuous versus Burst mode when
the sensation, as its name implies, is
one of on and off. Constant mode is
often used for acute pain via Pain Gate
Effect whereas Burst mode is useful in
chronic pain relief. Burst gives a
combination of Pain Gate and
Endorphin Release, but the squeezing
feeling may not be as comfortable. The
sensation in Burst is more of a
‘grabbing’, ‘clawing’ type and usually
more by way of muscle twitching than
with the high or low frequency modes.
The stimulation intensity will need to be
relatively high. In Constant mode, the
sensation is continuous and is more of
a tingling pins and needles type.
•Modulation Mode
Modulation is when either the
frequency or pulse width sweep across
range of settings. In modulation mode,
the machine delivers a less regular
pattern of TENS stimulation in an
attempt to reduce or minimise the
accommodation effects of regular,
patterned stimulation. This is potentially
most useful for patients who use TENS
for several hours a day, if for no other
reason than accommodation occurs at
a slower rate and therefore less
intensity adjustment may be required.
Note: If you are using TENS for
the first time, it is
recommended that you start
with a setting of 110 Hz and 50 μs.
For more information about which
settings to choose for the different type
of pain, refer to section 7.3.
7. MODES
TENS One has three different modes:
•N: Constant/Normal stimulation with
adjustable parameters
•B: Burst stimulation with adjustable
settings.
Two stimulations per second, 250 ms
on, 250 ms off; pulse width and pulse
rate are selectable.
•M: Stimulation with modulated pulse
width and modulated frequency.
Pulse rate modulates from PR1
to PR2 or PR2 to PR1 while pulse
width modulates from PW1 to PW2 or
PW2 to PW1 within 6 seconds. PR1
and PW1 are adjustable. PR2 is 50
Hz fixed, PW2 is 200 μs fixed.
To choose a mode, press the button
MODE, until you reach the desired
mode.
7.1. PARAMETERS
Professor Han did research that
showed that Pincreased as the
frequency increased –but only tested
up to 100 Hz.
And that Edecreases as the frequency
increases.
So, E is less effective when the
frequency is >10 Hz and Pis less
effective when the frequency is <80 Hz.
Most clinical research on Phas been
done at 80 Hz or 100 Hz.
Many professional users believe that
the response to TENS varies between
individuals, and that you can get the
best response by choosing the
frequency that suits your nervous
system the best. They suggest that you
start at 80 Hz or 110 Hz, then try

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different the frequency until you find
one that gives you better pain relief.
7.2. SELECTING THE
PARAMETERS
Before adjusting the parameters, select
the mode of your choice.
•Frequency: To increase the
frequency (or pulse rate), rotate the
pulse rate knob clockwise. To
decrease, rotate the knob anti-
clockwise. You can select a frequency
from 1 to 150 Hz.
•Pulse Width: To increase the pulse
width, rotate the pulse width knob
clockwise. To decrease, rotate the
knob anti-clockwise. You can select a
pulse width from 50 to 250 µs in steps
of 10 µs.
•Timer: For each mode, you can select
a treatment duration with the timer
button. You can select a duration of C
(Continuous), 15, 30, 45, 60 and 90
minutes.
See section 6 for more information on
the choice of settings.
7.3. RECOMMENDED
SETTINGS
The tables below are only
recommendations.
There is not one programme for a
particular condition, and the best choice
varies from one person to another, even
if they have the same type of pain.
Therefore, the selection of both the
settings and the positioning of the
electrode pads should be performed on
an individual basis. You may need to try
a few positions/programmes before
finding the one that suits you.
Long term pain 1
Pain
area
Pulse
rate
Pulse
width
Mode
Timer
(min)
Lower
back
80
200
B
C
Sciatica
120
200
B
C
Shoulder
/ Deltoid
90
150
B
C
Hip
&Thigh
90
200
B
C
Wrist
pain
110
100
B
C
Knee
100
100
B
C
Calf
110
150
B
C
Ankle /
Foot
80
100
B
C
Long term pain 2
Lower
back
2
250
M
45
Sciatica
4
250
C
45
Shoulder
/ Deltoid
6
250
C
45
Hip
&Thigh
8
250
M
45
Wrist
pain
10
250
C
45
Knee
5
250
M
45
Calf
4
250
C
45
Ankle /
Foot
3
250
C
45
Acute pain
Lower
back
80
200
N
C
Sciatica
120
200
N
C
Shoulder
/ Deltoid
90
150
N
C
Hip
&Thigh
90
200
N
C
Wrist
pain
110
100
N
C
Knee
100
100
N
C
Calf
110
150
N
C
Ankle /
Foot
80
100
N
C

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7.4. MODE USAGE
TENS can be used for as long as it is
necessary. Continuous treatment is
fine, but the electrode pads should be
repositioned regularly (at least every 12
hours) to allow the skin to be exposed
to the air.
The Endorphin Release programmes
work better when the strength is high
enough to cause small muscle
contractions. Best results are achieved
with a session duration between 15 and
45 minutes. Longer use may cause
muscle ache.
8. ELECTRODE PADS
8.1. PAD POSITIONING
The electrode pads must always be
used in pairs (two electrode pads on
each channel), so that the signal can
flow in a circuit.
•TENS works one vertebra at a time.
You need to stimulate the sensory
nerves that enter the spine at the
same level as the nerve carrying
your pain. Since you don’t know
exactly where your nerves are, the
easiest way is to apply the electrode
pads around/near the source of the
pain.
•TENS activates the nerves best if it
travels along the nerve rather than
across it. So place one pad further
from the spine than the source of the
pain, and one closer.
•The nerves wrap around the limbs
and torso, so you may have to try a
few positions before you get the best
effect.
•If the pain is in, or close to, your
spine you can place one pad either
side of the spine.
•You may feel more sensation in one
pad than the other. This is normal –
it depends on where the electrode
pads are in relation to your nerves.
For areas that are difficult to reach, why
not ask a friend to help you attach the
electrode pads?
Always check that the unit is OFF
before attaching or removing
electrode pads.
Note: See examples of
positioning in the instructions
enclosed with your electrode pads.
8.2. PAD ADVICE
•The electrode pads supplied are
reusable but for single patient use.
•In order to obtain the best
conductivity through the electrode
pads always ensure that they are in
good condition and tacky.
•Before use make sure your skin is
clean and dry.
•Peel the electrode pads from their
protective plastic shield by holding
and lifting one corner of the pad and
pulling. Do not pull on the pigtail wire
of the pad.
•After use always replace the
electrode pads on the plastic liner
and replace them in the re-sealable
plastic bag.
•If the electrode pads dry out, then it
is best to buy a replacement pack. In
an emergency, it may be possible to

13
restore some of the tackiness of the
pad by adding a tiny drop of water on
each pad and spreading around. If
too much water is added, the
electrode pad will become too soft. If
that happens then it is suggested in
order to try and re-establish some
adhesiveness, to place them sticky
side up in a refrigerator for a few
hours.
•In very hot weather the gel on the
electrode pads may become soft. In
such cases place them, still on their
plastic liners and in their pouch into
a fridge until they return to their
normal condition.
•The electrode pads provided are
latex-free.
•Replace the electrode pads when
they lose their stickiness.
Poor connection may cause
discomfort and skin irritation.
•Storage life of an unopened pack of
electrode pads is 2 years. This may
be affected by very high
temperatures or very low humidity.
9. CONTENT
The pack contains:
•1 x TENS One pain relief unit
•2 x Lead wires (L-TN20)
•4 x 50x50 mm electrode pads (E-
CM5050)
•2 x AA 1.5V alkaline batteries
•1 x Detachable belt clip
•1 x Storage pouch
•1 x Manual instruction

14
10. UNIT INFORMATION
10.1. CONTROLS & DISPLAY
Channel 2
strength
Mode
Timer
Pulse rate
Channel 1
strength
Active output
indicators
Pulse width
LED indicator
light

15
10.2. OPERATING
INSTRUCTIONS
ON/OFF
To turn the unit ON, rotate on
of the control knobs clockwise
until you hear a click, the LED
indicator will light up (green colour).
To turn the unit OFF, rotate one of the
control knobs anti-clockwise until you
hear a click, the display will stop.
The unit will start with the mode you
used last.
Note: Always check unit is
OFF before applying or
removing electrode pads.
MODE CONTROL
The button marked MODE is
the mode control. The TENS
One has three different modes. When
the unit is first switched on it
automatically enters mode N.
Each time you press and release the
MODE button, the mode changes and
the letter is shown on the LCD.
Before changing the mode, it is strongly
recommended to bring the intensity
back to zero.
Each time you change the mode, the
strength level reverts back to zero for
three second before ramping back up to
the previous level of intensity.
TREATMENT TIMER
The TIMER button can be
used to set the session
duration. Press and release to change
the session time. You can set session
times of C (Continuous) or 15, 30, 45,
60 or 90 minutes.
The LCD shows the session duration
next to the min symbol. The unit
automatically counts down the minutes
set, once it reaches 0 the display will
flash until the device is manually
switched off.
PULSE RATE CONTROLS
To increase the frequency (or
pulse rate), rotate the pulse rate
knob clockwise. To decrease, rotate the
knob anti-clockwise.
PULSE WIDTH CONTROLS
To increase the pulse width,
rotate the pulse width knob
clockwise. To decrease, rotate the knob
anti-clockwise.
STRENGTH CONTROLS
On the top of the unit, there
are two rotating control knobs.
The left-hand knob change
strength in the left-hand lead and the
right-hand knob change the right-hand
lead.
To increase the strength, turn the knobs
clockwise.
To decrease the strength, turn the
knobs counter-clockwise.
The strength levels are shown on the
LCD.
The unit has 20 levels of strength, each
step is 3 mA. You may feel nothing over
the first few levels. Continue turning the
knobs carefully until the sensation is
strong but comfortable. Further
increases during use may be necessary
MODE
TIMER

16
if your body becomes used to the
sensation.
The orange LED on the output socket
indicates that there is an active output.
The LED will remain on as long as the
intensity is above 0.
LOW BATTERY
The LED indicator will flash
when you need to change
the batteries. The unit will
shut down about 2 minutes after this.
OPEN CIRCUIT CUTOUT
If the TENS One is not correctly
connected to your body, the strength in
the channel which is not properly
connected will automatically reset to
zero for 3 seconds and the display will
flash. After 3 seconds, the intensity will
start ramping back up to the intensity
selected. This also happens when
changing the mode. This is to prevent
sudden changes in sensations.
11. SETTING UP AND
USING THE TENS ONE
11.1. INSTALLATION OF
BATTERIES
1) Remove the battery cover.
2) Insert batteries.
Ensure that the batteries are inserted
the right way as shown in battery
compartment and that the ribbon is
behind them.
4) Replace the battery cover.
Storage
Remove batteries from your TENS One
if the unit is unlikely to be used for a
long period. Some types of batteries
may leak corrosive fluid.
Battery Life
Batteries should last about 48 hours at
full power.
Unused batteries have a nominal shelf
life of 3 years, but will usually last longer
than this.

17
Battery Warnings
Do NOT pierce, open,
disassemble, or use in a humid
and/or corrosive environment.
Do NOT expose to
temperatures over
60°C(140F).
Do NOT put, store or
leave near sources of heat, in
direct strong sunlight, in a high
temperature location, in a pressurized
container or in a microwave oven.
Do NOT immerse in water or
sea water, or get wet.
Do NOT short-circuit.
Do NOT connect the device
unless the battery cover is in
place.
If battery leakage occurs and comes in
contact with the skin or eyes, wash
thoroughly with lots of water.
Keep batteries out of the reach of small
children.
Caution NEVER attempt to
recharge an alkaline battery.
Risk of explosion.
Caution Do not mix old, new or
different types of batteries as
this may lead to battery leakage or low
battery indication.
Disposal: Always dispose of batteries
responsibly according to local
government guidelines. Do not throw
batteries onto a fire. Risk of explosion.
11.2. CONNECTING LEAD
WIRES
You can choose to use one or two lead
wires (two or four electrode pads).
Insert the lead wire plug(s) into the
socket(s) on the top of the unit.
Attaching the electrode pads to the
lead wire.
Push the pin ends firmly into the pigtail
ends of the electrode pads.
The lead wires may be damaged by
rough handling, and should be treated
with care.
Lead wire colour coding
The ends of the lead wires are coloured
black or red. This coding is provided for
some professional uses. For most
purposes, the orientation makes no
difference, and you can ignore this
colour coding.
11.3. PREPARING FOR
SESSION
1) Before use make sure your skin is
clean and dry.
2) Place the electrode pads on the skin,
see section 8.

18
3) You can use your TENS for several
hours, you can attach the unit to your
belt using the belt clip.
4) You can safely lean on the electrode
pads. The sensation might change.
Warning: Ensure the TENS
One is switched OFF before
applying the electrode pads on the skin.
11.4. TREATMENT SESSION
1) To turn the unit ON, rotate one of the
control knobs clockwise until you
hear a click, the LED indicator will
light up (green colour).
When switched on for the first time,
the TENS One will automatically
select the mode N. Next time, it will
automatically select the mode you
were using the last time it was
switched off.
2) You can select from the 3 preset
modes. Details in section 7 will help
you identify the best mode and
parameters to suit you.
3) With the required mode and
parameters selected, you can adjust
the intensity of the stimulation with
the two rotating control knobs on the
top of the unit until you reach a
comfortable level. The LCD display
shows the strength of intensity used
for each channel.
Note: If the sensation becomes
uncomfortable, reduce the
intensity.
11.5. AFTER YOUR
TREATMENT SESSION
When the timer reaches 0, the display
will flash until the device is manually
switched off.
1) To turn the unit OFF, rotate one of
the control knobs anti-clockwise until
you hear a click, the display will stop.
Then remove the electrode pads
from your skin by holding the pad
itself and gently pulling. Be careful
not to pull the wires as this may
damage them.
2) Replace the electrode pads to their
protective plastic shield and return
them to the re-sealable plastic bag.
Note: When removing the
electrode pads, DO NOT PULL
ON LEAD WIRES.

19
12. CLEANING &
STORAGE
Clean the case and lead wires at least
once a week by wiping with a damp
cloth and a solution of mild soap and
water. Wipe dry.
•Do not immerse your TENS
machine in water.
•Do not use any other cleaning
solution than soap and water.
Storage life
•Storage life of an unopened pack of
self-adhesive electrode pads is 2
years. This may be affected by very
high temperatures or very low
humidity.
•The unit has no fixed shelf life.
13. EMC
Wireless communications equipment
such as wireless home network
devices, mobile phones, cordless
telephones and their base stations,
walkie-talkies can affect this equipment
and should be kept at least a distance d
= 3,3 m away from the equipment.
(Note. As indicated in Table 6 of IEC
60601-1-2:2007 for ME EQUIPMENT,
a typical cell phone with a maximum
output power of 2 W yields d = 3,3 m at
an IMMUNITY LEVEL of 3 V/m).
Note: For hospital use, full EMC
advice tables are available on
request.
14. DISPOSAL OF WASTE
ELECTRICAL AND
ELECTRONIC
PRODUCTS (WEEE)
One of the provisions of the European
Directive 2002/96/CE is that anything
electrical or electronic should not be
treated as domestic waste and simply
thrown away. To remind you of this
Directive all affected products are now
being marked with a crossed-out
wheelie bin symbol, as depicted below.
To comply with the Directive, you can
return your old electro-therapy unit to us
for disposal. Simply print a postage-
paid PACKETPOST RETURNS label
from our website www.tenscare.co.uk,
attach this to an envelope or padded
bag with the unit enclosed, and post it
back to us. Upon receipt, we will
process your old device for components
recovery and recycling to help conserve
the world’s resources and minimise
adverse effects on the environment.