Item Type: Intelligent Overflow Detector Material: ABS Battery: 1 x 3V CR2 battery (excluded) Working Temperature: 0-40℃ Working Humidity: 20-85% Wireless Frequency: 2.4GHZ Communication Protocol: for Zigbee 3.0 Wireless Standard: IEEE802.11B/Q/N Wireless Range: Approx. 40meters/ 131.2ft 1、Application remote control, detect water leakage and push alarm to smartphone, real?time early?warning notifications and protect your home and property from water damage. 2、The water level detector is wall?mounted and easy to use. Removable battery (excluded) power supply, low power consumption. 3、The detector probe adopts IP56 waterproof technology, which is safe and durable, with good quality, and protects your house at all times. 4、The installation is simple, just place it in the bathroom, kitchen, under the sink or in front of the water heater to detect water leakage and avoid unnecessary water waste. 5、Water monitoring detector can be used in washing machine/basement/aquarium dishwasher/refrigerator/fish tank/pipe/toilet/toilet back/water filtration devices/garbage disposal/sewage pump/bath/sink, etc. 1 x Sensor 1 x Probe 1 x Base 1 x Sticker 1 x Manual 2 x Screw 2 x Expansion tube