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Key Features Motion sensor (5 m / 16 ft maximum range) . Magnetic entry sensor for door or window open/close . Accelerometer for garage door open/close . Temperature sensor . Humidity sensor . Ambient light sensor . Alarm sound sensor (detects UL217 and UL2034 alarm patterns) . Water sensor for detecting leaks and floods (requires water sensor adapter accessory only available in 3-pack at general release) . The UniFi Protect Smart Sensor is a battery-operated smart multi-sensor that detects motion and environmental conditions. The Sensor transmits sensory data and alerts over Bluetooth to the UniFi Protect ecosystem..