Safety switch open message

Room Sensors and Tank sensors have a physical safety switch that prevents the unit  from operating when it  is not assembled correctly.

The safety warning can appear  at  installation, or when the battery's are replaced and the front  cover is not placed on its back plate correctly.

This can also occur when there is a faulty installation where Room sensors are not securely screwed to the wall  ( which can also lead to  detached battery issues as well)

Please ensure the front of the unit it fitted flush all the way round with the back plate, and the two retaining  screws are tightened up.

When assembled correctly the message may take a few minutes to disappear then the sensor next communicates in.



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