-FT005 Product function introduction:1. Backlight on/off function. Time function 12H/24H system (default display when powered on: 0:00 24 hours)2. Transmitter low battery reminder. Alarm function (default display when powered on: 0:00)3. Buzzer on/off (the buzzer function is turned on or off only for the key sound, the alarm mode is not affected by this). Indoor temperature C/F (default C)4. Data signal indication. Water tank temperature C/F (Default C)5. Water tank water level display unit: meter/foot (power-on default: meter). Water tank liquid level high/low alarm modeAlarm sound on/off display, default onAlarm duration: 120 secondsHigh/low water level displayWater level depth analog display on 10-element LCD bar graphReceiver indoor temperature range: 0C~50C/-32F~122FTransmitter water tank temperature measurement range: -40C~60C/-40F~140FWater level measurement range: 1~5mTemperature resolution: 0.1C Accuracy: 1CWater level resolution: 0.01m Accuracy: 0.05mTransmitter protection level: IP65 (effective protection from rain splashes from any direction)Wireless transmission distance: 100 meters in open spaceScreen size: 4.3 inches Salt test; (-20C-60C) high and low temperature test;Power supply (batteries are not included in delivery):Receiver: 3*AAA battery power supply/TYPE-C power cable power supply;Transmitter: 6*AAA battery power supplyMaterial: ABScolour: WhitePackage Contents:1 x receiver 1 x transmitter 1 cordOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.