Performing these steps will ensure the necessary conditions exist for the sensor to transmit. The primary conditions are battery voltage and antenna connectivity. When troubleshooting antenna connectivity, you may need to consider the range to the nearest Gateway or Repeater, and whether there are other sensors within the same range still transmitting.
Supplies Needed
- (2-6) x AA Lithium Batteries
- Multimeter with DC Voltage
1. Remove the four screws to remove the lid of the transmitter. Unplug it if needed.

The lid will be attached with a cable to the base of the transmitter. If needed you may unplug the cable attaching the lid.
2. Below is an example of the inside of the sensor. Different models of sensor will have a similar layout.

3. Check the two batteries in the base unit for voltage. Normal batteries should read above 1.5V, and should be closer to 1.7V if newer. If in doubt of the battery health replace with new lithium batteries.
Lithium batteries are required. Non-lithium batteries will discharge very quickly and be depleted in a matter of days.

4. Check that the antenna connections have an external antenna screwed into the RP-SMA connector on the exterior of the transmitter. Unscrew the antenna and inspect the connection point on the Transmitter. It will have a male pin in the center. Ensure the pin is not bent.
If the pin is not bent, re-attach the antenna. Do not over tighten the antenna as this can cause the cable inside to rotate and be damaged.

5. Continue checking the antenna connectivity by inspecting the wire going inside from the RP-SMA jack, to the Xbee. Ensure the wire has not been damaged

6. The connector to the Xbee Radio is a u.FL connector which snaps down. Press lightly down onto it with your finger to confirm it is still attached.

7. Check the Power Switch on the sensor. The power switch has two settings. The desired outcome will depend on the power source in use.
Power Switch positions:
- | [X ] = Battery Power ONLY (if on Batteries, this is ON)
- | [ X] = Barrel Jack Power ONLY (if on Batteries, this is OFF)

8. Ensure the white cables are seated properly onto the circuit board and into the interior of the M12 connector. Different models of sensors may instead use screw terminals instead of JST style connectors.

9. Press the CONFIG button for 1 second - this will cause an LED to illuminate in some models of sensors. This action will test the batteries and the sensor power.

10. After the physical check of the transmitter, press the RESET button several times.
This will cause the sensor to begin its transmission cycle. Some models of sensors contain a real time clock, and will only transmit at their configured interval. It may take another 30 minutes before a reading and transmission to occur from the sensor.

11. Re-attach the lid, paying close attention to the orientation. Putting the lid on rotated incorrectly may damage or inadvertently disconnect the sensor internally.
Note the ‘SENSOR 1’ and ‘SENSOR 2’ labels go on the same side as the M12 connectors for the sensor probes.

12. If no transmission is received after an hour of completing the above steps a factory rest may be required.
To factory reset:
- Press RESET and release
- Press CONFIG for 25 seconds and release
- Wait 5 seconds and press RESET and release
Please note that factory reset will remove any configured FFT settings as well as push the sensor back to the 7FFF default network. You may need to coordinate with [email protected] for sensor reconfiguration.
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