Feature 11224V Power Supply System: Suitable for a variety of power inputs, convenient for users to use in different scenarios, strong compatibility. 2Waterproof and Anti Fog: With waterproof and anti fog technology, ensure high stability and durability in high humidity and humid environment, and extend using life. 3Multiple Alarm: With low water, high sewage level alarm, and low voltage alarm, timely reminds users to deal with problems and ensures the safety of equipment. 4Colorful Backlight: Designed with a colorful backlight, making it easy to observe at night or in a dim environment, improving using experience. 5Durable Material: Made of 316 stainless steel and ABS, with high corrosion resistance, suitable for sewage, fresh water and other environments, effectively prevent from damage.Item Type:3GaugeSetInstrumentPanelMaterial:316 stainless steel + ABS .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Hole Size: Approx. 250x145mm/9.84x5.71inWorking Voltage: 12-24VDCOperating Current: 70mA (24V)Working Temperature: -30~+75CStorage Temperature: -40~+85CWater Level Sewage Meter Signal:0~190 (factory default)0~180 10~180 240-33240-30Connection:1. Red Line: 9-32VDC2. Panel Black Line: Negative pole of power supply3. Meter Black Line: SensorFunction:1. Press the Mode button (less than 1 second) - times to change the backlight color: backlight order red (default) green blue white yellow yellow-green orangepurple.2. The alarm light is set by default water level meter alarm position 1/8; Sewage meter alarm position 7/8.Switch Function:8 switches control 8 different devices, 8 overload protectors protect 8 switches and 8 devices respectively.Features: 12-24V system, waterproof and anti fog, colorful backlight, low water level alarm, high sewage alarm, low voltage alarmPackage List1 x 3GaugeSetInstrumentPanel1 x Manual1 x Pack of Accessory (5 Pcs)