Multifunctional Ultrasonic Water Tank Level Meter with Indoor Temperature Display Digital Electronic Clock Thermometer 【Multifunctional Display】Features a digital clock with 12/24-hour format,indoor temperature display,and water tank level indicator for comprehensive monitoring. 【Wireless Transmission】Enjoy a wireless transmission range of up to 100 meters in open areas,allowing for flexible placement of the receiver. 【Precise Measurements】Offers high-resolution temperature (1°C accuracy) and water level (0.01m resolution,±0.03m accuracy) readings for reliable data. 【Customizable Alarms】Set high/low water level alarms and utilize the empty tank alert feature for proactive management. 【Versatile Temperature Display】Monitor both indoor and water tank temperatures in ℃ or ℉,with a wide range from -40℃ to 60℃ for the tank. 【Data Tracking】Records minimum and maximum values for indoor and tank temperatures as well as water levels for trend analysis. 【Large Display】3.15-inch screen provides clear visibility of all essential information at a glance. Specifications: Receiver indoor temperature range: 0℃~50℃/-32℉~122℉ Transmitter water tank temperature measurement range: -40℃~60℃/-40℉~140℉ Water level measurement range: 0~15m Temperature resolution: 1℃ Accuracy: ±1℃ Water level resolution: 0.01m Accuracy: ±0.03m Alarm duration: 120 seconds Wireless transmission distance: 100 meters in open space Screen size: 3.15 inches Body material: ABS Product certification: CE-EMC; ROHS Power supply: Receiver: 2*AA batteries; Transmitter: 6*AAA batteries (not included) Package included: 1 x Receiver 1 x Transmitter 2 x Installation Screws 1 x English and Chinese Manual