Features:Digital display DC voltage detection, control the relay output.DC 6~80V relay interface board with 2 buttons for easy operation.With clear LED display, convenient to check the value.Adjustable Voltage Detection Range: DC 0~99.9V.When the measured voltage is lower than the lower limit or higher than upper limit value, the relay works.Can be used for voltage detection switch, battery over/under voltage protector or discharge meter.Comes with a cover for protection.Specifications:Material: PCB + ABSWorking Voltage: DC 6~80VVoltage Detection Range: DC 0~99.9VError: +/-0.1VWorking Current: 8mA/24V(relay open, LED displays OFF about 4mA/24V); 58mA/24V(relay closed)A set of transformations(normally open/normally close, NO/NC)Contact Load: NO: 30A/250V AC or 30A/30V DC; NC :20A/250V AC or 20A/30V DCAttention: Because high voltage DC electric arc damages relay contact,so the electric load above DC60V load current is less than 10A.Contact Resistance: 100m(1A 6VDC)Mechanical Durability: 10 millions Electricity durability: >100,000 (20A~250VAC)Operating Temperature: -40~85CItem Size: 9.4 * 5.2 * 3cm / 3.7 * 2.05 * 1.18inPackage Size: 9.5 * 6 * 3cm / 3.74 * 2.36 * 1.18inPackage Weight: 85g / 3ozPackage List:1 * Relay Switch Controller