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 & UL2034 alarm patterns). Water sensor for detecting leaks & floods (requires water sensor adapter accessory only available in 3-pack at general release). The Uni Fi Protect Smart Sensor is a battery-operated smart multi-sensor that detects motion & environmental conditions. The Sensor transmits sensory data & alerts over Bluetooth to the Uni Fi Protect ecosystem..