Exact model-family answer directory
ADT Water and Temperature Sensor troubleshooting
ADT Water and Temperature Sensor (SSW5R0-29): what it does; where to put it; batteries; reset; a stuck wet reading; wrong time on events, and a fix for each symptom below.
- What it doesThe ADT water and temperature sensor reports a leak when its probes touch water and reports the temperature at its position, so it can warn you of a burst pipe or a freezing basement before the damage spreads.
ADT Water and Temperature Sensor is offline or unavailable
Open record ADT · routineADT Water and Temperature Sensor routine, schedule or automation is not running
Open record ADT · wrong readingADT Water and Temperature Sensor shows the wrong time, state or sensor reading
Open record ADT · setupADT Water and Temperature Sensor will not complete setup or pairing
Open record ADT · factory resetADT Water and Temperature Sensor will not reset or needs to be reset safely
Open recordConfirm the model first
Which units this covers, and how to tell yours is one of them
- Model numbers and patterns
- SSW5R0-29
- Not applicable to this hardware
- This ADT Water and Temperature Sensor does not have the hardware for: will not stay connected to Wi-Fi; does not respond to voice control; video is blurry, dark, frozen or delayed; misses motion or records too many events; shared users or family members cannot control it; will not connect through Matter, HomeKit or another platform; firmware update is stuck or failed.
Published specification
What is true of this model and changes how you fix it
- What it isA dual-purpose sensor (model SSW5R0-29) that both detects water and monitors ambient room temperature, reporting both to the ADT+ app; it triggers the Base's alarm when it detects water.
- Temperature reporting intervalADT states the sensor reports its actual temperature reading to the app roughly every 15 minutes — a real, documented delay, not a live continuous feed, so a just-changed room temperature will lag in the app for a few minutes.
- Power and mountingOne CR123A battery. It ships with an external extension probe for wall-mounting plus a mounting bracket and screws, letting it sit flat on a surface or be wall-mounted with the probe extended toward the monitored area.
- Where to put itFlat on the floor by a washing machine, water heater, dishwasher, sump pit or under a sink, with the probes facing down. The commonest leaks start at appliance hoses and supply lines, so those spots are worth more than dry rooms.
- BatteriesIt runs on a battery that the panel reports as low. Fit the type the manual lists, and expect shorter life in a cold or hot room.
- ResetThere is no reset button. Delete the sensor at the panel and enrol it again, or clear a trouble message after fixing the cause.
- A stuck wet readingDry and clean the probes with a soft cloth, because a film of damp or mineral deposit can hold a wet reading after the water has gone.
- Wrong time on eventsThe time comes from the system, so check the time zone in the account or panel and the phone's automatic time setting before suspecting the sensor.
- TestingPut a few drops of water on the probes as the manual allows, confirm the panel or app reports a leak, then dry it and check the alert clears.
Where these figures were read. help.adt.com/article/blu-adt-water-temp-sensor ("ADT Blu- Water and Temperature Sensor (SSW5R0)")
Manufacturer support for this product line. ADT Support — ADT Blu- Water and Temperature Sensor (SSW5R0). ADT's own overview and setup article for the Water and Temperature Sensor, which reports ambient temperature roughly every 15 minutes in addition to water detection.
Also read for this model. SafeWise — ADT troubleshooting guide.
Exact questions
Questions that only have an answer for the ADT Water and Temperature Sensor
Why doesn't the temperature reading in the app update right away?+
ADT documents an approximately 15-minute reporting interval for this sensor's temperature readings — it is not a live feed, so a room temperature change will take several minutes to appear in the ADT+ app even though the sensor itself is working correctly.
Can this sensor be wall-mounted instead of sitting flat?+
Yes — ADT ships it with an external extension probe, a mounting bracket, and screws specifically for wall-mounting, as an alternative to placing the sensor body flat on a surface.
Where should I put a water sensor?+
Where water would collect first, by appliances and under sinks, flat on the floor with the probes down.
Does it have a reset button?+
No, it is cleared and enrolled at the panel.
Why does it show wet when the floor is dry?+
The probes are damp or dirty; dry and clean them.
Why does the status look old?+
The sensor may have stopped reporting; check the battery and range.