Marmitek Mini Timer MT20 User manual

Mini Timer
20299 / 20090303 • MT20 MINI TIMERTM
ALL RIGHTS RESERVED MARMITEK ©
USER MANUAL
GEBRAUCHSANLEITUNG
GUIDE UTILISATEUR
MODO DE EMPLEO
MANUALE D’ISTRUZIONE
GEBRUIKSAANWIJZING
MT20 Mini Timer™
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SAFETY WARNINGS
• To prevent short circuits, this product should only be used inside and only in dry
spaces. Do not expose the components to rain or moisture. Do not use the product
close to a bath, swimming pool etc.
• Do not expose the components of your systems to extremely high temperatures or
bright light sources.
• In case of improper usage or if you have altered and repaired the product yourself,
all guarantees expire. Marmitek does not accept responsibility in the case of improper
usage of the product or when the product is used for purposes other than specified.
Marmitek does not accept responsibility for additional damage other than covered by
the legal product responsibility.
• This product is not a toy. Keep out of reach of children.
• Do not open the product (battery panel excepted): the device may contain live parts.
The product should only be repaired or serviced by a qualified expert.
• Keep batteries out of the reach of children. Dispose of batteries as chemical waste.
Never use old and new batteries or different types of batteries together. Remove the
batteries when you are not using the system for a longer period of time. Check the
polarity (+/-) of the batteries when inserting them in the product. Wrong positioning
can cause an explosion.
• Only connect the adapter to the mains after checking whether the mains voltage is
the same as the values on the identification tags. Never connect an adapter or power
cord when it is damaged. In that case, contact your supplier.
• Automatic switching devices provide comfort, but can also be dangerous. They can
surprise people or can ignite clothing hanging over an electric heat source. Please be
careful and take appropriate measures to avoid accidents.

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TABLE OF CONTENTS
SAFETY WARNINGS ...................................................................................................3
TABLE OF CONTENTS.................................................................................................4
HOW DOES MARMITEK X-10 WORK?........................................................................5
INTRODUCTION .........................................................................................................8
How it works .........................................................................................................9
QUICK TOUR............................................................................................................10
How to program a timed event ............................................................................11
Special programming buttons ..............................................................................11
SETTING UP THE MINI TIMER....................................................................................12
Setting the clock ..................................................................................................12
Controlling x-10 modules.....................................................................................12
Setting something to happen every day at the same time.....................................13
Setting a timed event to occur Once only.............................................................14
Setting a timed event to occur in the “Security” mode.........................................14
Reviewing timer events ........................................................................................14
If the display shows FULL .....................................................................................15
Selector switch.....................................................................................................15
Instantly Controlling Modules ..............................................................................15
Setting the Alarm Buzzer .....................................................................................16
To Cancel/Snooze the wake-up alarm ..................................................................16
Suspending the wake up function........................................................................16
CHANGING THE HOUSECODE .................................................................................17
FREQENTLY ASKED QUESTIONS ...............................................................................18
TECHNICAL SPECIFICATIONS ...................................................................................20

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HOW DOES MARMITEK X-10 WORK?
Marmitek X-10 components use the existing mains wiring to communicate (using
Marmitek X-10 signals). You can build a complete system using the three different
kind of components of the Marmitek X-10 System:
1. Modules: These components will receive Marmitek X-10 signals and will
switch or dim the attached lamp or appliance. Examples of these modules are lamp
modules and appliance modules. These are available as build-in, micro, DIN rail and
plug-in modules.
2. Controllers: These components will transmit Marmitek X-10 signals and
thus will control the Modules.
3. Transmitters: Wireless components like remotes. The signals of these
components will be received by a controller with transceiver functionality (IRRF 7243,
TM13 or CM15Pro). The Transceiver will translate the signals into Marmitek X-10
signals on the power line.
ADRESSES
Up to a maximum of 256 different addresses can be preset. These are subdivided into
a so-called HouseCode (A to P incl.) and a UnitCode (1 to 16 incl.). The HouseCode
can also be set on the controllers, so that the controllers and modules become part of
the same system. The address can be set either using code dials or by pressing
buttons, depending on the type of module.
The Marmitek X-10 System uses standard commands, which control all units with the
same HouseCode at the same time (e.g. all lights on, all off, etc.).
SIGNAL RANGE
Range of Marmitek X-10 signals over the Power Line and how to increase the
range.
The Marmitek X-10 System is based on power line communication. The range of the
Marmitek X-10 signals very much depends on the local circumstances. On average the
range is a cable length of 80 meters.

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If you have difficulties with the range of your Marmitek X-10 signals, please
pay attention to the following facts:
1. When more than one phase is used for your electrical system, it is necessary to
couple these phases for the Marmitek X-10 signals. For coupling you can use FD10
Phase Couplers/Filters. You only need to install a Phase Coupler/Filter when your wall
outlets and light switches are divided over more than one phase (more than one
group is no problem). For bigger buildings or longer distances we advice you to use an
active repeater instead of passive FD10’s.
2. It is possible that Marmitek X-10 signals are attenuated by devices and lights which
are connected to the power line. In a normal home situation this effect is negligible
(the Marmitek X-10 system is using active gain control to eliminate the effects).
However, it is possible that a particular device in your house is attenuating the signals
so much that the range of Marmitek X-10 signals is decreased significantly. When you
have range problems, it is wise to try to locate the device which is attenuating the
signals simply by unplugging devices from the power line, and testing the differences
in range for your Marmitek system. When e.g. your conclusion is that e.g. your
computer monitor is attenuating the signal, you can use a FM10 Plug-in Filter
between the power line and the monitor to eliminate the effects.
Known devices which can cause attenuation are:
PC Monitors
PCs with heavy internal power supplies
Old Televisions
Copiers
Fluorescent Lights
Gas Discharge Lamps (Energy Saving Lamps)
3. Some (old) devices are able to disturb the signal by transmitting noise on the power
line. Because the Marmitek X-10 signals are transmitted on 120 kHz, only noise on or
near this frequency will have influence on the range. When you use a FM10 Filter to
connect this device to the power line, the noise will be filtered.
4. The Marmitek X-10 protocol has several mechanism to avoid modules to be
switched on or off by other sources than your Marmitek X-10 Controllers. However, it
is possible that the Marmitek X-10 signals are disturbed by e.g. baby phones which
are in TALK mode (continuous transmission). When these kind of signals are present
on the power line it is possible that the Marmitek X-10 signals will not come through.
5. The mains do not stop at the front door of your home. Everything that is attached
to mains nearby your home can have influence on Marmitek X-10 signals (e.g. heavy
machinery). If you think that your system is influenced by devices out of your house, it
is advisable to install FD10 Phase Coupler/Filter on each phase entering the house.

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These filters will block signals coming into or going out of your house, but will also
match the impedance for the mains. Hereby make your house Marmitek X-10
compatible for these units. The FD10’s will not only filter but will also couple the
phases (please see 1).

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INTRODUCTION
The Marmitek X-10 Mini Timer controls up to 8 X-10 Modules automatically or
instantly. You can have your outside lights as well as inside lights and appliances go
on and off at preset times to give your home a lived-in look while you are away.
You can program your Modules to go on and off at the same time every day or you
can set your radio to wake you up “Once” only, for an early morning flight. There is
even a “Security” Mode that automatically varies your programmed time each day so
your home doesn’t look like it’s controlled by a timer.
You can keep the Mini Timer by your bedside and it will wake you up on weekdays. It
has a snooze feature so you can sleep a while longer and you can turn the alarm off
on weekends.
You can manually turn off your child’s radio or night light from your bedside. You can
turn on ALL lights connected to Lamp Modules with the touch of a button if you hear
a suspicious noise at night. You can even turn off everything in the system with one
button.
BEFORE YOU BEGIN
Keep in mind that your Marmitek X-10 System will always turn lamps and appliances
on or off the instant you press the buttons. That’s obvious - but there can be some
unexpected consequences.
For example, an empty coffee pot can be remotely turned on. If that should happen,
your coffee pot may be damaged from overheating. If an electric heater is turned on
by remote control while clothing just happens to be draped over it, a fire could result.
Therefore, do not use with high power heating devices such as portable heaters.
Always be aware of what appliance you are turning on or off so that potentially
dangerous situations will not occur.
WHAT IT DOES
The Marmitek Mini Timer plugs into any AC outlet in your home and you set it like a
digital alarm clock. Channel number 1 also activates an internal buzzer so you can use
it as an alarm clock too! You can program up to 8 X-10 Modules from the Mini Timer
and you also have instant control of 8 Modules.
There is a handy snooze feature which lets you cancel the alarm buzzer by pressing
any key. This will stop the buzzer and will set the alarm off again in 10 minutes. You
can do this indefinitely.
Advancing to a particular time (in the Prog Set/Review mode) and then pressing a
number ON or OFF key will set an on or off time for that Module, every day. However,
if (within 4 seconds) you press “Once” you will change that program to occur only
once, if you press “security” you will change the program to occur at different times
each day (variably).

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How it works
The Mini Timer plugs into any AC outlet in your home and transmits digitally encoded
signals over your house wiring instantly or at the times you set. These signals are
received by the X-10 Modules.
You Plug a lamp up to 300 watts into a Lamp Module, an appliance such as a radio,
fan, or coffee pot into an Appliance Module and replace important indoor or outdoor
security lights up to 3600 watts with the In Wall Appliance Module (modules sold
separately).
SETTING IT UP
Connect the power supply to the Mini Timer and plug the power supply into any
convenient AC outlet.
NOTE: you must use the power supply that came with the Mini Timer. The power
supply contains circuitry required to control your Marmitek X-10 modules, so you
CANNOT replace it with a regular 12V power supply.
Install two AA alkaline batteries in the compartment on the back, if desired (to protect
the time and programmed events if there's a power outage).

QUICK TOUR
Let’s quickly review the functions of each part of the keyboard (you can go to
SETTING UP THE MINI TIMER for a step by step tutorial if you prefer). Referring to the
diagram below and the cutaway sections that follow, you will see that the keyboard
on the Mini Timer consists of 7 basic areas.
1. Mode Switch. This is used to select whether you want to set or
review a timed event, change the Housecode, or set the clock. See
Changing the Housecode to change the Housecode.
2. ON/OFF Buttons. There are 4 sets of ON/OFF
buttons. They let you turn Modules 1 through 4
(or 5 through 8) on and off instantly by pressing
either the ON or OFF button.
In the “Prog Set/Review” mode these button are
used to set on and off times for the selected
number (1 to 4 or 5 to 8).
buzzer.
3. Time/dim Adjust Rocker. This is used to set the time of the clock and
the time you want to set for each programmed event. Also brightens/dims
Lamp and Wall Switch Modules, after selecting desired number button.
4. Alarm. The number 1 button also sets the time for the internal alarm
5. All Units Off Button. Instantly turns Off ALL Modules including Appliance
Modules.
6. Mode Button cycles through Daily, Once, and Security Modes.
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ery day.
rning).
7. All Lights On Button. Instantly turns on ALL Lamp/dimmer Modules.
How to program a timed event
1. Place the mode switch in “Prog Set/Review” position.
2. Advance to the desired time.
3. Set the 1-4/5-8 switch to the desired position.
4. Press any of the 4 ON or OFF buttons to set an On or Off time for that Module. This
will program the Mini Timer to turn that Module on (or off) at that time every day.
5. Advance to another time, and press another ON or OFF button as desired.
6. Set the Mode switch back to RUN.
Special programming buttons
1. Mode button. If within 4 seconds after setting an On or Off time, you press the
“Mode” button once or twice until Once shows in the display, you will
modify the program to carry out your programmed event only Once and it
will not repeat on the next day.
Press again (within 4 seconds after setting an On or Off time) until Security is
shown in the display, to modify the program so that your lights (or appliances) will go
on or off at a slightly different time every day (within the programmed hour). With
each press the display shows whether you've selected Once, or Security. If neither
Once nor Security is displayed, the event happens at the same time ev
2. Clear Button. Pressing this (in the Prog/Review Mode) cancels the On time or Off
time being displayed.
3. Wakeup Switch. In the “ON” position an internal wake up buzzer will sound at
the time programmed for Module number 1. When this sounds you can turn
it off by pressing any button to obtain the “snooze” feature. This will turn
the buzzer back on in 10 minutes and will do so each time you operate
snooze.
The alarm can be cancelled by moving the Buzzer switch to “OFF” and back
to “ON” (for wake up the next mo
4. Selector Switch. Used to select whether you want your Mini Timer to instantly
control Modules set to Unit Codes 1 thru 4 or 5 thru 8. You can move the
selector switch back and forth to achieve instant control of 8 X-10 Modules.
You can also move the switch during programming to select which modules
(1-4 or 5-8) you are setting times for.

SETTING UP THE MINI TIMER
Setting the clock
Plug the Mini Timer into any convenient AC outlet. Fit two AA alkaline batteries in the
battery compartment to protect the time and program for up to 48 hours in the event
of a power outage. If the battery is low, dead, or not installed, the low battery
indicator will show in the display.
When you first plug in the Mini Timer the display will flash. It will also flash if you have
had a power outage and have not installed two AA alkaline batteries or if the
batteries are dead.
1. Set the mode switch to “Clock Set.”
2. Press the top of the “Time” rocker to advance to the correct time. A
quick press on the rocker will advance the time by 1 minute. If you hold the
rocker down the display will advance to the correct time faster. If you
overshoot, you can use the bottom rocker to go back.
Controlling x-10 modules
Follow the steps below to make sure you can control your Modules before you
program the Mini Timer.
1. Install and set up all of your Marmitek X-10 Modules referring to the instructions
included with them. Be sure to turn off the power at the main circuit breaker
panel when installing Wall Switch Modules or Micromodules.
2. Set all of your Modules to the same Housecode as the Mini Timer (default is A).
3. Set each Module to a Unit Code Between 1 and 8.
4. Set the Mode Switch on the Mini Timer to the “RUN” position.
5. To turn On a particular Module, set the selector switch to 1-4 or 5-8, then press the
ON button corresponding to the number you set on the Module you want to control.
Then press and hold Bright or Dim to brighten or dim the light (Lamp/dimmer
Modules only).
6. To turn Off a particular Module, set the selector switch to 1-4 or 5-8, then press
the OFF button corresponding to the number you set on the Module you want to
control. The display shows On or Off next to the module number for the button you
pressed.
To turn on ALL lights connected to Lamp Modules and Wall Switch Modules (with
the same Housecode as the Mini Timer), press the “All Lights On” button. This does
not affect appliances.
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time for.
To turn off ALL lights AND appliances connected to any kind of X-10 Module
(with the same Housecode as the Mini Timer), including Appliance Modules, press the
“All Off” button.
Setting something to happen every day at the same time
After you have installed all of your Modules and checked that they are working
instantly from the Mini Timer you are ready to program timed events.
1. Set the Mode Switch to the “Prog Set/Review” position.
2. Set the 1-4/5-8 switch as desired.
3. Press the “Time” advance rocker key to advance to the desired on or off time.
When you first press the rocker the time will advance by 1 minute. If you
hold the top of the rocker down the display will “speed up” so you can get
to the desired time faster. When you get close to the desired time, you can
“tap” the rocker a few times to get to the exact time you want. If you
overshoot, you can press the bottom of the rocker to go back.
4. When you reach the desired time press the ON or OFF button for the Unit
Code you want to program an On or Off
For example: If you advance to 12:45 PM and then press the ON button for number 2,
you will program the Module set to Unit Code 2 to go On at 12:45 PM every day.
If you advance to 7:00 AM and then press the OFF button for number 2, you will
program the Module set to Unit Code 2 to go Off at 7:00 AM every day.
You can now advance to another time and press another ON or OFF button (or the
same button) to program another time.
NOTE:
You can program a total of 64 On or Off times. These are distributed between the 8
unit codes (selected with the 4 ON/OFF buttons). You could for example program
Module number 1 to go On 32 times and Off 32 times, but then that would use up all
the memory and you wouldn't be able to program any times for any of the other 7
unit codes. Or, you could program modules 1 thru 8 to go On and Off 4 times each.
I.E. you could program 4 On and Off times for modules 1 thru 4, then slide the
selector switch to the 5-8 position and program another 4 On and Off times for
modules 5 thru 8.

If you try to set an on or off time and the memory is full, the display will read FULL. To
clear this, press the Clear button.
Setting a timed event to occur Once only
If (within 4 seconds after setting an On or Off time) you press the “Mode” button
once or twice until Once shows in the display, you will modify the program for that
particular Unit Code to occur only Once.
The event you have programmed will happen (at the time you have programmed)
within the next 24 hours, and will then be automatically cleared from memory and
will not happen again the next day.
You can mix Once and Daily events for the same Unit Code (up to the 64 maximum
events for all 8 unit codes).
Setting a timed event to occur in the “Security” mode
If you advance to a specific time, and then press one of the ON or OFF buttons, you
will set an On or Off time for that Unit Code to occur every day at exactly the same
time.
If however, within 4 seconds after setting an On or Off time, you press the “Mode”
button once or twice until Security is shown in the display, you will modify the
program for that particular Unit Code to occur every day at a slightly different time
each day.
The event you have programmed will happen at the time you have programmed on
the first day, and will then happen at a different time on each subsequent day (within
the hour you have programmed). For example:
If you advance to 7:35 PM, press the ON button for number 2 and then (within 4
seconds) press the Mode button once or twice until Security shows in the display, the
Module(s) set to Unit Code number 2 will go On at exactly 7:35 PM on the first day
and any time between 7:00 PM and 8:00 PM every day after that. This time will vary
each day so that the Module doesn’t go on at the same time each day (to give your
home a lived-in look).
You can mix Once, Daily, and Security events for the same Unit Code (up to the 64
maximum events for all 8 unit codes). See note at bottom of Setting something to
happen every day at the same time
Reviewing timer events
Set the Mode Switch in the “Prog Set/Review” position. If no
events exist in memory 0:00 is displayed, otherwise the first event
found in memory is displayed.
If (while in Prog/Review Mode) one of the 4 module ON (or OFF)
buttons is pressed without modifying the current time, and no events are in
memory for that module, 0:00 is displayed.
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If (while in Prog/Review Mode) one of the 4 module ON (or OFF) buttons is pressed
without modifying the current time, and events do exist, each press of the module
ON (or OFF) button cycles through (and displays) all the ON (or OFF) events for that
particular module. I.E. you are "Reviewing" the times that are set. The display also
shows whether the event is a Once event or a Security event. Note if it's a Security
event the actual time that the next event will occur will be shown. If neither Once nor
Security is displayed, the event is a Daily event.
If (while in Prog/Review Mode) one of the 4 module ON (or OFF) buttons is pressed
after modifying the current time, then the time is stored as a new event for that
module. I.E. you can program new events while reviewing the current programmed
events.
While displaying any time for any module it can be deleted using the Clear key. All
events for a module can be cleared by pressing Clear multiple times until the display
shows 0:00.
If an event time is modified and you do not want to store it to any module ON/OFF
button, press Clear. The previous event is now displayed and can be deleted if desired
by pressing Clear again.
If the Mode switch is moved after a time has been changed and without a module
ON/OFF button being pressed, this time is discarded and is not stored in memory.
If the display shows FULL
If FULL is displayed when you try to enter a programmed time, this means that you
have tried to enter an additional time when you have already used up all the available
memory. Cancel one or more of your set times by pressing a number ON (or OFF)
button, then press Clear to clear that event. Then enter another timer event.
Selector switch
1-4 position - With the “Selector” switch in the 1-4 position the 4 ON and
OFF buttons control (and set times for) Modules set to Unit Codes 1 thru 4
respectively.
5-8 position - With the “Selector” switch in the 5-8 position the 4 ON and
OFF buttons control (and set times for) Modules set to Unit Codes 5 thru 8
respectively.
Instantly Controlling Modules
With the Mode switch in the RUN position you can slide the Selector Switch back and
forth to instantly control Modules set to 1 thru 4, or 5 thru 8. Also, in the Prog
Set/Review mode you can set events for modules 1 thru 4, then move the selector
switch and program more events for modules 5 thru 8. See note at Setting something
to happen every day at the same time for maximum number of events you can
program..

Setting the Alarm Buzzer
With the “Wake” switch in the “ON” position, any program you set for
Module number 1 will also set the internal alarm buzzer.
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t
will
A bell icon will show in the display to indicate that a time for the Buzzer is
set.
For example: If you connect your bedside lamp to a Lamp Module set to Unit
Code 1 and then program Module number 1 for an On time of 7:00 AM - A
7:00 AM your bedside lamp will turn on and the internal buzzer in the Mini Timer
sound. You can turn the buzzer off (when you wake up) by sliding the Buzzer switch
to the OFF position. You can turn off your bedside lamp by pressing the OFF button
for Module 1. You can leave the Buzzer switch in the OFF position if you don’t want
to use the wake up feature. This will not affect any programs you have entered for
Module 1.
Alternatively, if the Buzzer switch is OFF and you place the Mode switch in the Clock
Set position, you will “suspend” both the buzzer AND any times you have set for
Module 1. This is useful to suspend the wake-up function on weekends. See To
Cancel/Snooze the wake-up alarm.
The backlight and the buzzer do not operate when the unit is running on the
backup batteries.
To Cancel/Snooze the wake-up alarm
When the alarm sounds at the time you have set, you can cancel it in one of two
ways:
1. Slide the Wake switch to the OFF position. This will cancel the alarm
permanently. Slide the switch back to “ON” if you want the alarm to wake you up the
next morning.
2. Press any key. This will give the “snooze” feature. Pressing any key while the
buzzer is sounding will turn the buzzer off and will automatically turn it back on in 10
minutes time. You can do this indefinitely.
The buzzer will automatically turn off, and stay off, after 10 minutes if you ignore it.
Any Module(s) you have installed and set to Unit Code 1 will turn On when the buzzer
sounds and will stay On after you turn the Buzzer switch to OFF or cancel buzzer
using the snooze feature. You will need to press the OFF button for number 1 to turn
the Module(s) off. Alternatively, you could program it/them to turn off later.
Suspending the wake up function
If you set channel 1 for an On time of 7:00 AM and number 1 is your bedside lamp, at
7:00 AM every day, your bedside lamp will turn on and the internal buzzer will
sound. If you turn the Buzzer switch off on Friday nights the buzzer will not wake you
up the next morning but your bedside lamp will still turn on.

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To suspend the program for channel 1 turn the Buzzer switch to OFF, AND place
the Mode switch in the “Clock Set” position. The On program for BOTH the Alarm
buzzer AND the bedside lamp will then be suspended.
You can control Modules instantly with the Mode switch in the “Clock Set” position,
just as you can when it's in the RUN position, but remember to place the Mode switch
back to RUN and put the Buzzer switch back to the ON position on Sunday night to
resume the wake-up program for weekdays.
Note: Pressing the ON button for Module number 1 with the Mode switch in the RUN
position or Clock Set position does not activate the internal buzzer. This buzzer only
sounds at the times you set.
CHANGING THE HOUSECODE
When you first plug in the Mini Timer it controls X-10 Modules set to Housecode A.. If
you want to change the Housecode:
1. Set the Mode switch to “Housecode Set.”
2. Press the up or down "Time" rocker to select the desired Housecode (as
shown in the display).
3. Set the Mode switch back to RUN.

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FREQUENTLY ASKED QUESTIONS
What is the reason for modules to switch on/off spontaneously?
It is possible that a Marmitek X-10 System is installed at one of your neighbours using
the same House Code. To solve this problem try to change the House Code of your
system, or have FD10 Phase Coupler/Filter installed at your incoming mains.
My modules will not respond to my controller.
Make sure that the House Code on all Modules and Controllers are set to the same
House Code (A .. P).
My modules will not react to my remote / sensor.
When you use a remote or sensor, you should have at least one TM13 Transceiver or
Marmitek X-10 Security Console installed in your house. These components will
translate the radio signals to the Marmitek X-10 signal on the power line. Using
several remotes and sensors, you only need one central transceiver.
Am I able to increase the range of my remotes by using more Transceivers?
Yes, you can use more than one TM13 Transceiver in your home when the range of
your remotes is not sufficient. The TM13 is using so called collision detection to
prevent signals to be disturbed when more than one TM13 is transmitting. TM13’s
will wait for a quite power line before transmitting their data. To prevent your
Marmitek X-10 System to become slow or to prevent dimming from becoming less
smooth, make sure that the TM13 units are placed as far away from each other as
possible.
a Particular Module won’t go on or off from the buttons on the Mini Timer:
Check that you have power to the outlet controlling the Module and the switch on
the light or appliance is ON.
Check that the Unit Code and Housecode on the Module are set correctly. Try
plugging the Module and the Mini Timer into the same outlet. If the Module doesn’t
work in ANY outlet, not even with the Module and the Mini Timer in the same duplex
receptacle (top and bottom) the Module may be defective.
You can’t control ANY Modules from the Mini Timer.
Check that there is a time displayed on the Mini Timer and that you have power to
the outlet it is plugged into.
Check that the Housecode for the Mini Timer is set correctly (see Changing the
Housecode). Try plugging the Module and the Mini Timer into the same outlet. If
NONE of your Modules work in ANY outlet, not even with the Module and the Mini

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Timer in the same duplex receptacle (top and bottom) the Mini Timer may be
defective
Intercom systems
Intercom systems which send voice signals over existing electrical wiring may interfere
with the operation of the Mini Timer when the intercom is in use. If the Intercom
system has its own separate wiring it will not cause a problem.
Power interruptions
When the power is restored after an outage, Lamp Modules and Wall Switch Modules
will normally be OFF. Appliance Modules have a “latching relay mechanism” and will
stay as they were before the interruption.
This means that when you first plug in an Appliance Module which you have just
purchased, it may in an ON or OFF state (the state it was in before unplugging it after
factory testing).
Battery backup
If you install two AA alkaline batteries in the battery compartment of the Mini Timer
your programmed times will be protected for up to 48 hours in the event of a power
outage. The backlight and the buzzer do not operate when the unit is running on the
backup batteries.
Battery indicator
If the batteries are low, dead, or not installed, the low battery indicator will be shown
in the display. It is recommended that you check the condition of the batteries
regularly and replace them at least once every 6 months.
Do you still have questions? Please check out www.marmitek.com for more
information.

TECHNICAL SPECIFICATIONS
MT20:
Backup battery: 2 x AA batteries.
Dimensions: 121 x 56 x 86 mm
Weight: 200 g
Colour: Silver
PS90:
Power: 230V +10% -15 %, 50 Hz
Supply current : < 4,5W
Signal transmission: > 5Vpp in 5 Ohm at 120 kHz ± 1 kHz
X-10 transmission: 1 pulse burst at 0°, 60° and 120°
Sends X-10 Key codes: On, Off, DIM+, DIM-, All Units OFF, All Lights ON.
Ambient temperature: - -10° C to + 50° C (operation)
-20° C to + 70° C (storage)
© MARMITEK
20
Environmental Information for Customers in the European Union
European Directive 2002/96/EC requires that the equipment bearing this
symbol on the product and/or its packaging must not be disposed of with
unsorted municipal waste. The symbol indicates that this product should
be disposed of separately from regular household waste streams. It is your
responsibility to dispose of this and other electric and electronic equipment via
designated collection facilities appointed by the government or local authorities.
Correct disposal and recycling will help prevent potential negative consequences to
the environment and human health. For more detailed information about the disposal
of your old equipment, please contact your local authorities, waste disposal service, or
the shop where you purchased the product.