Sonoff's SNZB series forms the backbone of this group: door and window sensors, motion and presence detectors, temperature and humidity meters, and water leak sensors to sit beside the washing machine or the water heater. Almost all of them run on ZigBee and a battery, so the gateway has to be in place already. If a sensor is needed for a damp space or against the surface of a pipe, choose a model fitted with a separate probe, such as the waterproof WTS01.
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Sonoff's SNZB series forms the backbone of this group: door and window sensors, motion and presence detectors, temperature and humidity meters, and water leak sensors to sit beside the washing machine or the water heater. Almost all of them run on ZigBee and a battery, so the gateway has to be in place already. If a sensor is needed for a damp space or against the surface of a pipe, choose a model fitted with a separate probe, such as the waterproof WTS01.