ITEM NAME:XH-M601 12V Battery Charging Control Board Intelligent Charger Power ControS Hn Introduction Power Supply: 13.8V-14.8V Relay closing voltage: 12.4V Relay off voltage: 14.8V Voltage error:Â ±0.1V Voltage detection: DC voltmeter Charging type: 12V battery Potentiometer adjustment: RP1 RP2 (carefully adjusted) PCB Board Size: 65mm x 52mm x 30mm / 2.56" x 2.05" x 1.18" (L x W x H) Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 0.5-1cm measuring deviation due to manual measurement. 1 cm = 0.3937 ".Charging type: 12V battery. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. PCB Board Size: 65mm x 52mm x 30mm / 2.56" x 2.05" x 1.18" (L x W x H).