Hobo Rxw-smc-900 User manual

HOBOnet® Wireless Sensor Network

RXW EC-5 or 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

22241-D

This sensor measures soil moisture and is designed to work with the HOBOnet (HOBO® RX)

Wireless Sensor Network in which data is transmitted wirelessly from the sensor mote across

the network to the station and then uploaded to HOBOlink® web-based software. With

HOBOlink, you can monitor sensor readings, view graphs, set up alarms, download data, and

more.

Specifications

RXW-SMC-xxx RXW-SMD-xxx

Measurement Range

In soil: 0 to 0.550 m³/m³

(volumetric

water content)

In soil: 0 to 0.570 m³/m³ (volumetric

water content)

Extended Range

-0.401 to 2.574 m³/m³; see Note 1 -0.659 to 0.6026 m³/m³; see Note 1

Accuracy

±0.031 m³/m³ (±3.1%) typical 0 to

50°C (32° to 122°F) for mineral

soils up to 8 dS/m and ±0.020

m³/m³ (±2%) with soil specific

calibration; see Notes 2 and 3

±0.033 m³/m³ (±3.3%) typical 0 to

50°C (32° to 122°F) for mineral soils

up to 10 dS/m and ±0.020 m³/m³

(±2%) with soil specific calibration;

see Notes 4 and 5

Resolution

0.0007 m³/m³ (0.07%) 0.0008 m³/m³ (0.08%)

Volume of Influence

0.3 liters (10.14 oz) 1 liter (33.81 oz)

Sensor Frequency

70 MHz 70 MHz

METER ECH

2O Probe Part

No.

EC-5 10HS

Sensor Operating

Temperature

Range

0° to 50°C (32° to 122°F). Although

the sensor probe and cable can

safely operate at below-freezing

temperatures (to -40°C/F), the soil

moisture data collected at these

extreme temperatures is outside

of the sensor’s accurate

measurement range.

0° to 50°C (32° to 122°F). Although

the sensor probe and cable can

safely operate at below-freezing

temperatures (to -40°C/F), the soil

moisture data collected at these

extreme temperatures is outside of

the sensor’s accurate

measurement range. Extended

temperatures above 50°C (122°F)

will decrease mote battery life.

Wireless Mote

Operating Temperature

Range

-25° to 60°C (-13° to 140°F) with rechargeable batteries

-40° to 70°C (-40° to 158°F) with lithium batteries

Radio Power

12.6 mW (+11 dBm) non-adjustable

Transmission Range

Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high

Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high

Wireless Data Standard

IEEE 802.15.4

Radio Operating

Frequencies

RXW-SMC-900 and RXW-SMD-900: 904–924 MHz

RXW-SMC-868 and RXW-SMD-868: 866.5 MHz

RXW-SMC-921 and RXW-SMD-921: 921 MHz

RXW-SMC-922 and RXW-SMD-922: 916–924 MHz

Modulation Employed

OQPSK (Offset Quadrature Phase Shift Keying)

Data Rate

Up to 250 kbps, non-adjustable

Duty Cycle

<1%

Maximum Number of

Motes

Up to 50 wireless sensors or 336 data channels per one HOBO RX station

Logging Rate

1 minute to 18 hours

Number of Data Channels

Battery Type/

Power Source

Two AA 1.2V rechargeable NiMH batteries, powered by built-in solar

panel or two AA 1.5 V lithium batteries for operating conditions of -40° to

70°C (-40° to 158°F)

RXW EC-5 or 10H Soil

Moisture Sensor

Models:

•RXW-SMC-900 and

RXW-SMD-900 (US)

•RXW-SMC-868 and

RXW-SMD-868 (Europe)

•RXW-SMC-921 and

RXW-SMD-921 (Taiwan)

•RXW-SMC-922 and

RXW-SMD-922

(Australia/NZ)

Included Items:

•Protective cap

•Cable ties

•Screws

RXW 10HS model shown

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

1-800-LOGGERS 2 www.onsetcomp.com

Specifications (continued)

Battery Life

With NiMH batteries: Typical 3–5 years when operated in the temperature

range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see

Deployment and Mounting), operation outside this range will reduce the

battery service life

With lithium batteries: 1 year, typical use

Memory

16 MB

Dimensions

RXW-SMC-xxx soil probe: 89 x 15 x 1.5 mm (3.5 x 0.62 x 0.06 in.)

RXW-SMD-xxx soil probe: 160 x 32 x 2 mm (6.5 x 1.25 x 0.08 in.)

Cable length: 5 m (16.4 ft)

Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)

Weight

RXW-SMC-xxx sensor and cable: 180 grams (6.3 oz)

RXW-SMD-xxx sensor and cable: 190 grams (6.7 oz)

Mote: 223 g (7.87 oz)

Materials

Sensor: Weatherproof

Mote: PCPBT, silicone rubber seal

Environmental Rating

Mote: IP67, NEMA 6

Compliance Marks

RXW-SMC-900 and RXW-SMD-900: See last page

RXW-SMC-868 and RXW-SMD-868: The CE Marking identifies

this product as complying with all relevant directives in the

European Union (EU).

RXW-SMC-921 and RXW-SMD-921: See last page

RXW-SMC-922 and RXW-SMD-922: See last page

Note 1: (RXW-SMC-xxx and RXW-SMD-xxx) The sensor is capable of providing readings outside the standard volumetric

water content range. This is helpful in diagnosing sensor operation and installation. See the Sensor Operation

section for more details.

Note 2: (RXW-SMC-xxx) This is a system level accuracy specification and is comprised of the probe’s accuracy of ±0.03

m³/m³ typical (±0.02 m³/m³ soil specific) plus the mote accuracy of ±0.001 m³/m³ at 25°C (77°F). There are

additional temperature accuracy deviations of ±0.003 m³/m³ / °C maximum for the probe across operating

temperature environment, typical <0.001 m³/m³ / °C. (The temperature dependence of the mote is negligible.)

Note 3: (RXW-SMC-xxx) Given the nature of the sensor design and sensor operating frequency, the system has inherent

susceptibilities to Radio Frequency signals. The accuracy specification when subjected to certain RFI

environments, such as those outlined in IEC 61000-4-3 and IEC 61000-4-6, is reduced to 0.061 m³/m³.

The system level accuracy will be particularly affected when placed in an electric field of 3 V/m or greater in the

70 MHz range. RFI mitigation practices and physical deployment changes may reduce the systems susceptibility.

Note 4: (RXW-SMD-xxx) This is a system level accuracy specification and is comprised of the probe’s accuracy of ±0.03

m³/m³ typical (±0.02 m³/m³ soil specific) plus the mote accuracy of ±0.003 m³/m³ at 25°C (77°F). There are

additional temperature accuracy deviations of ±0.003 m³/m³ / °C maximum for the probe across operating

temperature environment, typical <0.001 m³/m³ / °C. (The temperature dependence of the mote is negligible.)

Note 5: (RXW-SMD-xxx): Given the nature of the sensor design and sensor operating frequency, the system has inherent

susceptibilities to Radio Frequency signals. The accuracy specification when subjected to certain RFI

environments, such as those outlined in IEC 61000-4-3 and IEC 61000-4-6, may be significantly reduced.

The system level accuracy will be particularly affected when placed in an electric field of 3 V/m or greater in the

150 KHz to 1000 MHz range. RFI mitigation practices and physical deployment changes may reduce the systems

susceptibility, however will yield reduced system accuracy. If deployments are planned in high RFI energy

environments, Onset recommends on-site testing to determine system level accuracy.

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

1-800-LOGGERS 3 www.onsetcomp.com

Mote Components and Operation

Sensor Mote Closed, Front Sensor Mote Closed, Back

Sensor Mote Opened

Mounting Tab: Use the tabs at the top and bottom of the mote

to mount it (see Deploying and Mounting).

Solar Panel: Position the solar panel towards the sun to charge

the mote batteries (see Deploying and Mounting).

Sensor Cable: This is the cable that connects the mote to the

sensor.

Eyelet: Use this eyelet to attach a 3/16 inch padlock to the

mote for security.

Latch: Use the two latches to open and close the mote door.

Ground Wire Port: Use this port to connect a ground wire (see

Deploying and Mounting).

Antenna: This is the built-in antenna for the radio

communications across the RX Wireless Sensor Network.

LEDs: There are two LEDs to the left of the LCD screen. The

green LED blinks during the process of joining a network,

blinking quickly while the mote searches for a network and

then slowly as the mote registers with the network. Once the

network registration process is complete, the blue LED blinks at

4 seconds to indicate normal operation. If the mote is not

currently part of a network, the blue LED will be off. If the blue

LED is on and not blinking, there is a problem with the mote.

Contact Onset Technical Support.

Solar Panel Cable: This cable connects the built-in solar panel

to the mote circuitry.

Battery Holder: The location where the batteries are installed

as shown (see Battery Information).

USB Port: Use this port to connect to the mote to a computer

via USB cable if you need to update the firmware (see Updating

Mote Firmware).

Button: Push this button for 1 second to illuminate the LCD or 3

seconds for the mote to search for a HOBOnet Wireless Sensor

Network to join (see Adding the Mote to the HOBOnet Wireless

Sensor Network).

LCD Screen: The mote is equipped with an LCD screen that

displays details about the current status. This example shows all

symbols illuminated on the LCD screen followed by definitions

of each symbol in the table.

LCD Symbol

Description

The battery indicator shows the approximate battery

charge remaining.

This is a signal strength indicator. The more bars, the

stronger the signal between motes. If there is no x

icon next to the signal strength indicator, then the

mote is part of a HOBOnet Wireless Sensor Network.

An empty signal strength icon plus the x icon

indicates that the mote is not currently part of a

network. See Adding the Mote to the HOBOnet

Wireless Sensor Network for details on how to add a

mote to the network.

When the mote is in the process of joining a

network, the signal strength icon will blink and then

the bars in the icon will cycle from left to right. The x

icon will blink during the last step in the network

registration process (see Adding the Mote to the

HOBOnet Wireless Sensor Network for details).

This indicates a problem with the sensor itself (the

mote is operational). Check the sensor and make any

adjustments to it as needed. Contact Onset

Technical Support if the problem persists.

Sensor Operation

The soil moisture sensor measures the dielectric constant of

soil in order to determine its volumetric water content. The

dielectric constant of water is much higher than that of air or

soil minerals, which makes it a sensitive measure of the water

content. During operation, values of 0 to 0.5 m3/m3are

possible. A value of 0 to 0.1 m3/m3indicates oven-dry to dry

soil respectively. A value of 0.3 or higher normally indicates a

wet to saturated soil. Values outside the operating range may

be a sign that the sensor is not properly installed (poor soil

contact or foreign objects are adjacent to the sensor) or that a

soil-specific calibration is required. Note that sudden changes in

value typically indicate that the soil has settled or shifted,

which are signs that the sensor may not be installed properly or

that it has been altered or adjusted during deployment.

The soil moisture sensor provides accurate readings for soil

between 0 and 50°C (32° and 122°F). The sensor will not be

damaged by temperatures as low as -40°C (-40°F); it is safe to

leave the sensor in the ground year-round for permanent

installation. Readings outside the sensor frequency range may

result in errors in HOBOlink.

Solar Panel

Solar Panel Cable

Button

USB Port

Battery Holder

LCD Screen

Latch

Eyelet

Ground Wire

Port

Sensor Cable

LEDs

Mounting

Tab

Antenna

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

1-800-LOGGERS 4 www.onsetcomp.com

Adding the Mote to the HOBOnet Wireless

Sensor Network

The mote must join a HOBOnet Wireless Sensor Network

before it can begin measuring soil moisture and transmitting

data. This requires accessing the station and the mote at the

same time so it is recommended that you complete these steps

before deploying the mote.

Important: If you are setting up a new station, follow the

instructions in the station quick start before setting up this

mote (go to www.onsetcomp.com/support/manuals/24380-

man-rx2105-rx2106-qsg for RX2105 and RX2106 stations or go

to www.onsetcomp.com/support/manuals/18254-MAN-QSG-

RX3000 for RX3000 stations).

To add a mote to the network:

1. If the LCD is blank on the station, press any button to wake

it up.

2. Press the Select button once (which shows the number of

smart sensors installed) and then press it again to switch to

the module with the manager (module 2 on RX2105 or

RX2106 stations).

3. Press the Search button (the magnifying glass). The

magnifying glass icon will blink while the station is in search

mode.

4. Open the mote door and install the batteries if you have not

already done so.

5. Press the button on the mote for 3 seconds. The signal

strength icon will flash and then cycle.

6. Watch the LCD on the mote.

The green LED blinks quickly while the mote searches for a

network to join and then blinks slowly while it completes

the network registration. Once the mote has finished

joining the network, the green LED turns off and the blue

LED then blinks indefinitely while the mote is part of the

network.

Note: If the mote cannot find the network or has trouble

remaining connected during this process, make sure the

mote is in a vertical, upright position and within range of

the station.

7. Press the Search button (the magnifying glass) on the

station to stop searching for motes.

If you added more than one more mote to the network, then

the total channel count on the station LCD for the manager

module will represent all measurement channels plus a battery

channel for each mote in the network.

Sensor measurements will be recorded at the logging interval

specified in HOBOlink, transmitted to the station, and uploaded

to HOBOlink at the next connection interval (readout). Use

HOBOlink to monitor mote status and health. If a mote is

temporarily offline, any logged data is saved until it is back

online. In addition, if a mote is offline for 30 minutes, the

station will automatically connect to HOBOlink and report the

mote as missing. Once the mote is back online, any logged data

will be uploaded the next time the station connects to

HOBOlink.

Press this button for 3

seconds for the mote to

join the network

This signal strength icon

blinks while searching for

a network.

Press this button to view the module

Press this button so the station is ready

to have motes join the network

Once a network is found,

the icon will stop flashing

and the bars will cycle from

left to right.

Press this button again to

stop searching for motes

This network connection

“x” icon blinks while the

mote completes the

registration process,

which may take up to

five minutes.

Once the mote has finished joining

the network, the “x” icon is

removed and the channel count

on the station LCD increases by

two (one for soil moisture and one

for the mote battery).

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

1-800-LOGGERS 5 www.onsetcomp.com

See the HOBOlink Help for details on how to change the logging

and connection intervals, view data, check mote status, add the

mote to a map, and more.

Deployment and Mounting

Mounting and Positioning the Mote

•Mount the mote to a mast or pipe using cable ties or affix

the mote to a wooden post or flat surface with screws.

Insert the cable ties or screws through the holes on the

mounting tabs.

•Consider using plastic poles such as PVC to mount the

mote as certain types of metal could decrease signal

strength.

•Make sure the mote remains in a vertical position once it

is placed in its deployment location for optimal network

communications.

•Make sure the mote door is closed, with both latches fully

locked to ensure a watertight seal.

•Consider using a 3/16 inch padlock to restrict access to the

mote. With the mote door closed, hook a padlock through

the eyelet on the right side of the door and lock it.

•Position the mote towards the sun, making sure the solar

panel is oriented so that it receives optimal sunlight

throughout each season. It may be necessary to

periodically adjust the mote position as the path of the

sunlight changes throughout the year or if tree and leaf

growth alters the amount of sunlight reaching the solar

panel.

•Make sure the mote is mounted a minimum of 1.8 m (6 ft)

from the ground or vegetation to help maximize distance

and signal strength.

•Place the mote so there is full line of sight with the next

mote. If there is an obstruction between two sensor

motes or between the sensor mote and the manager, then

use a repeater mounted on the obstruction. For example,

if there is a hill between the sensor mote and the

manager, place a repeater at the top of the hill between

the sensor mote and the manager.

•There should not be more than five motes in any direction

at their maximum transmission range from the manager.

Data logged by a wireless sensor must travel or “hop”

across the wireless network from one mote to the next

until it ultimately reaches the manager connected to the

station. To make sure the data can successfully travel

across the network, the mote should not be more than

five hops away from the manager.

•The HOBOnet Wireless Sensor Network can support up to

50 wireless sensors or 336 data channels per one HOBO

RX station.

•Use a #4-40 screw to attach a ground wire to the port on

the back of the mote if you are deploying the mote in a

location where lightning is a concern.

Sensor Installation Guidelines

This sensor measures the water content in the space

immediately adjacent to the probe surface. Air gaps or

excessive soil compaction around the probe can profoundly

influence soil water content readings. Do not mount the probes

adjacent to large metal objects, such as metal poles or stakes.

Maintain at least 8 cm (3 inches) of separation between the

probe and other objects. Any objects, other than soil, within 8

cm (3 inches) of the probe can influence the probe’s

electromagnetic field and adversely affect output readings. The

RXW-SMC sensor must be installed at least 3 cm (1.18 inches)

from the soil surface and the RXW-SMD sensor must be

installed at least 10 cm (3.94 inches) from the soil surface to

obtain accurate readings.

It is important to consider the particle size of the medium in

which you are inserting the sensor because it is possible for

sticks, tree bark, roots, or other materials to get stuck between

the sensor prongs, which will adversely affect readings. Be

careful when inserting these sensors into dense soil as the

prongs can break if excessive sideways force is used to push

them into the soil.

To install the soil moisture sensors, follow these guidelines:

•Good soil contact with the sensor probes is required.

•Install the sensor probes into undisturbed soil where there

aren’t any pebbles in the way of the probes.

•Use a soil auger to make a hole to the desired depth (an

angled hole is best) and push the probes into undisturbed

soil at the bottom of the hole. Alternatively, dig a hole and

push the probes into the side of the hole.

•If the probe has a protective cap on the end, remove it

before placing the probe into the hole.

•To push the probe into the soil, use a PVC pipe with slots

for the sensor and a longer slot for the cable.

•Thoroughly water the soil around the sensor after it is

installed with the hole partially backfilled to cause the soil

to settle around the sensor.

•As the hole is back-filled, try to pack the soil to the same

density as the undisturbed soil.

•Secure the sensor cable to the mounting pole or tripod

with cable ties.

•Use conduit to protect the cable against damage from

animals, lawn mowers, exposure to chemicals, etc.

If you need to calibrate your probe for the soil, you may want

to gather soil samples from each sample depth at this time.

When removing the probe from the soil, do not pull it out of

the soil by the cable! Doing so may break internal connections

and make the probe unusable.

Maintenance

The soil moisture sensor does not require any regular

maintenance. If cleaning, rinse the sensor with mild soap and

fresh water.

The mote is designed for outdoor use, but should be inspected

periodically. When inspecting the mote, do the following:

•Verify the mote is free of visible damage or cracks.

•Make sure the mote is clean. Wipe off any dust or grime

with a damp cloth.

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

1-800-LOGGERS 6 www.onsetcomp.com

•Wipe off any water before opening the mote.

•Make sure the interior seal is intact and the latches are

fully locked when the mote door is closed.

Calibration

The soil moisture sensor comes pre-calibrated for most soil

types. If, however, your soil type has high sand or salt content,

the standard calibration will not be accurate. In such cases, you

will need to convert the data provided by the probe with a

specific calibration for your individual soil type. To determine

the soil specific calibration formula, refer to the Calibrating

ECH2O Soil Moisture Probes application note, available at

http://www.onsetcomp.com/support/tech-notes/calibrating-

ech2o-soil-moisture-sensors-application-note.

Updating Mote Firmware

If a new firmware version is available for the mote, use

HOBOlink to download the file to your computer.

1. In HOBOlink, go to Devices, then RX Devices, and click your

station name.

2. On the station page, click Overview and scroll down to

Device Information.

3. Click the Wireless tab. This icon appears next to the

mote if there is a new version of firmware available.

4. Click the firmware upgrade link. Click Download and

save the firmware .bin file to your computer.

5. Connect the mote to the computer with a USB cable (open

the mote door and use the USB port to the right of the

LCD). The blue LED is illuminated while connected.

6. The mote appears as a new storage device in the

computer’s file storage manager. Copy the downloaded

firmware file to the new storage device (the mote). The

blue LED will blink slowly while the file is copying.

7. After the file is copied to the mote, the LED will stop

blinking and remain a steady blue. Eject the storage device

from the computer and disconnect the cable from the

mote. The firmware installation process will begin

automatically on the mote. The blue LED will blink rapidly

while the firmware is installed. Once the firmware

installation is complete, the LCD symbols return and the

mote will automatically rejoin the network.

Notes:

•Mac® users: A message may appear indicating the disk

has not ejected properly when disconnecting the mote

from the computer. The mote is operational and you can

ignore the message.

•If the blue LED turns off abruptly while copying the file or

installing the firmware, a problem has occurred. Contact

Onset Technical Support for help.

Battery Information

The mote uses two 1.2 V rechargeable NiMH batteries, charged

by the built-in solar panel. The quality and quantity of solar

light can affect whether the battery is sufficiently charged to

last through the night and cloudy periods. Make sure the mote

is placed in a location that will receive several hours of sunlight

each day. If the mote does not receive enough sunlight to

recharge the batteries, the battery life is estimated at 3–4

months. When batteries are regularly recharged, expected

battery life is estimated at 3–5 years. Battery life varies based

on the ambient temperature where the mote is deployed, the

logging interval, the number of tripped alarms, and other

factors. Deployments in extremely cold or hot temperatures

can impact battery life. Estimates are not guaranteed due to

uncertainties in initial battery conditions and operating

environment.

Mote operation will stop when battery voltage drops to 1.8 V.

Mote operation will return if the battery recharges to 2.3 V. If

the batteries are unable to be recharged, replace them with

fresh rechargeable batteries. Note: if you install used

rechargeable batteries that together are less than 2.3 V, the

mote will not resume operation.

To replace rechargeable batteries:

1. Open the mote door.

2. Remove the old batteries and install fresh ones observing

polarity.

3. Make sure the solar panel cable is plugged in.

The mote contacts the network once the new batteries are

installed. The green LED blinks quickly while the mote searches

for a network to join and then blinks slowly while it completes

the network registration. Once the mote has finished joining

the network, the green LED turns off and the blue LED then

blinks indefinitely while the mote is part of the network.

Lithium Batteries

You can use two 1.5 V lithium batteries (HWSB-LI) for operation

at the extreme ends of the mote operating range. Lithium

battery life is an estimated at 1 year, but varies based on the

ambient temperature where the mote is deployed, the logging

interval, the number of tripped alarms, and other factors.

Estimates are not guaranteed due to uncertainties in initial

battery conditions and operating environment. When using

lithium batteries, you must disconnect the solar panel cable

because the batteries will not be recharged.

To install lithium batteries:

1. Open the mote door.

2. Remove any old batteries and install the new ones

observing polarity.

3. Push in the side tab of the solar panel cable connector and

pull the connector out of the cable port.

Make sure

solar panel

cable is

installed

when using

rechargeable

batteries

RXW EC-5 and 10H Soil Moisture Sensor (RXW-SMx-xxx) Manual

registered trademarks of Onset Computer Corporation. ECH2O is a registered trademark of METER Group,

Inc. Mac is a registered trademark of Apple Inc. All other trademarks are the property of their respective

companies.

22241-D

4. Place the connector in the slot on the inside of the mote

door. Make sure the solar panel cables are tucked inside the

door so that they do not interfere with the interior seal

when the mote is closed.

The mote contacts the network once the new batteries are

installed. The green LED blinks quickly while the mote searches

for a network to join and then blinks slowly while it completes

the network registration. Once the mote has finished joining

the network, the green LED turns off and the blue LED then

blinks indefinitely while the mote is part of the network.

WARNING: Do not cut open, incinerate, heat above 85°C

(185°F), or recharge the lithium batteries. The batteries may

explode if the mote is exposed to extreme heat or conditions

that could damage or destroy the battery cases. Do not mix

battery types, either by chemistry or age; batteries may rupture

or explode. Do not dispose of the logger or batteries in fire. Do

not expose the contents of the batteries to water. Dispose of

the batteries according to local regulations for lithium

batteries.

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user

is encouraged to try to correct the interference by one of the following measures:

•Reorient or relocate the receiving antenna

•Increase the separation between the equipment and receiver

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

•Consult the dealer or an experienced radio/TV technician for help

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired operation.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.

Industry Canada Statements

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device.

Avis de conformité pour l’Industrie Canada

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1)

l'appareil ne doit pas produire de brouillage, et (2) l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le

fonctionnement.

To comply with FCC and Industry Canada RF radiation exposure limits for general population, the logger must be installed to provide a separation distance of at least 20cm from

all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

NCC Statement

經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。

低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依電信法規定作

業之無線電通信。低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。

Translation:

Article 12

Without permission granted by the NCC, any company, enterprise, or user is not allowed to change frequency, enhance transmitting power or alter original characteristic as well

as performance to an approved low power radio-frequency device.

Article 14

The low power radio-frequency devices shall not influence aircraft security and interfere with legal communications. If found, the user shall cease operating immediately until no

interference is achieved. The said legal communications means radio communications is operated in compliance with the Telecommunications Act. The low power radio-