Features 1、The protection board supports power supply TVS surge protection; when power on, power supply has a instantaneous high voltage, and TVS can reduce instantaneous high voltage to protect circuit. 2、The 1% high precision divider resistor makes voltage measurement more accurately. 3、Voltage precision and resolution is 0.1 V, and has calibration function. 4、Lower digital tube display brightness, energy saving and protect your eyes. 5、Save parameters when power failure to avoid repeated settings. Specification Features: Lower digital tube display brightness, energy saving and protect your eyes. Save parameters when power failure to avoid repeated settings. With energy saving mode and restore to factory setting function. Designed with three control buttons, four-digit display, 1 charging indicator LED light. It can charge 6-48V lead-acid battery and lithium battery; charger voltage range is DC 7 to 60V. Specifications: Working Current: DC 6-60V Working Current (at 12V power supply): Standard mode, standby current 10mA; Charging current 130mA; Energy saving mode, standby current 5mA; Charging current 125mA Relay Maximum Load Current:30A 250VAC/30VDC Size: 8*4.5cm/3.14*1.77in Weight: 53g(approx.) Package Includes: 1 x Protection Board Package List