Ultrasonic Ultrasonic Water Liquid Tank Depth Level Meter Depth Sensor With Temperature Display This meter monitors the liquid depth level of the tank and displays it on a 10-element LCD bar graph.It can keep minimum and maximum records of tank liquid level.It supports high/low tank liquid level alarm and empty tank liquid alert.Displays indoor temperature (℉ or ℃) and tank temperature (℉ or ℃) at the same time.The receiver can be placed standing on the desk or hung on the wall. LCD Display for Description Suitable Liquid Type: All Non-Corrosive Liquids Indoor Temperature Range: 0~50℃Outdoor temperature range: -40~60℃Temperature Accuracy: ±1oCWater level measurement range: 0~15m / Resolution: 0.01m / Accuracy: +/-0.03MTransmitting frequency: 433MHZTransmitting range: 100 meters (300 feet) in open areaTransmitting interval: 30s when level changes or 3 minutes when level does not changeReceiver battery: 2X AA 1.5V LR3 alkaline batteries (not included)Transmitter battery: 6X AAA 1.5V LR6 alkaline or lithium batteries (not included)Battery life: Minimum 12 months for the receiver / Minimum 12 months for the transmitterReceiver size: 108*94*27mmTransmitter size: 97*68*152mmLCD size: 66*45mm(3.3 inches)Open distance: Approximately 100M/328.1ftEffective distance: Approximately 30M/98.4ft Overrun Alarm: 1. upper water level crossing alarm.2. Alarm for crossing the lower water level. Product Size: