Pairing an ADT Water and Temperature Sensor with your system means making the control panel hear it and register it, and when the pairing fails the cause is distance, the battery, the pairing mode or an earlier registration. Before you start, put in the battery and keep the sensor within a few feet of the panel for the pairing, so the radio link is strong. In the ADT app, choose Add a device, select the water and temperature sensor and follow the prompts.
The checks in more detail
The panel goes into a listening mode, and you press the sensor's button or trigger it as the instructions say, usually by pressing and holding until a light or a sound confirms. Wait for the app to report that the sensor was found and for the panel to confirm. If the sensor is not found, check the battery first: a new battery of the right type, seated the right way, with the plastic tab removed if there is one.
Move closer, away from large metal objects and from other radios such as a router or a microwave, which interfere with the signal. Make sure the panel is in pairing mode, since it listens only for a short time, and try again. If the sensor was registered to another system before, for example it was second-hand or from a previous installation, it must be removed from that system or reset before it can pair; follow the instructions for resetting the model, which differ between devices.
Once paired, name the sensor and set its location, then move it to its final place and check the signal in the app. A sensor that pairs on the bench and fails in the basement is too far from the panel, so move the panel or consider a closer position. Set the temperature limits and test the water detection with a damp cloth. If the pairing fails repeatedly with a fresh battery and a short distance, contact ADT support with the sensor model and serial number. Keep the original packaging details, since support will ask for them.
Differential
Likely causes of “ADT Water and Temperature Sensor will not complete setup or pairing”, and how to tell them apart
- 1
A weak or wrong battery
What separates it The sensor does not respond
How to confirm Fit a new battery of the right type
- 2
The panel not in pairing mode
What separates it It never finds the sensor
How to confirm Start Add a device and try again
- 3
Too far or interference
What separates it The radio link is weak
How to confirm Pair within a few feet, away from metal and radios
- 4
A previous registration
What separates it The sensor belongs to another system
How to confirm Reset it or remove it from the old system
- 5
A final location out of range
What separates it It pairs and then drops
How to confirm Move the panel or the sensor
Before you touch a setting
Record this first — changing settings destroys the evidence
- The device's state in the app
- The battery or power
Try in this order
0 of 5 completedPut in a fresh battery
ReversibleRemove any tab.
Start Add a device
ReversibleIn the ADT app.
Pair within a few feet
ReversibleOf the panel.
Move it and check the signal
ReversibleIn its place.
Contact ADT
ReversibleIf it will not pair.
Model-specific
What is true of this model and not of its siblings
- Pairing mode
- The panel listens for a short time.
- Range
- Test the signal in the final place.
Stop boundary
When this stops being a self-service repair
- !If the problem persists after these steps, contact ADT with the device and system details
- !Do not disable a safety device
Evidence ledger
Sources behind this answer
Exact questions
Common questions
How do I pair the sensor?+
Add a device in the app, then trigger the sensor.
Why is it not found?+
Battery, distance or pairing mode.
What if it was used before?+
Reset it first.
Why does it drop after placing?+
It is out of range.