WDS9 Open Loop Photo Sensor

The WDS9 is a wireless, solar powered, open loop photo sensor. The WDS9 is designed for indoor use and does not require batteries or wires to operate allowing it to be mounted inconspicuously on the window mullion. The WDS9 monitors exterior light levels (up to 65000 lux / 6000 footcandles) and sends out wireless transmissions whenever the reading has changed more than 3% or on heartbeat: once every minute during daylight hours and every hour during the night.

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