Features 1、Start charging voltage and stop charging voltage can be freely set, automatically cut off power to save power and extend service life of battery 2、The board has a bright 3-digit display with 0.1 accuracy shows the setting value 3、Start or stop according to the set value, and monitor real-time voltage, to effectively protect storage battery from overcharge 4、Big power screw terminals with large capacity can meet many wiring requirements, maximum withstand voltage 300V, current 20A 5、Suitable for charger and control charging storage batteries of 12V, 24V, 36V, 48V, 60V, 72V, 84V, 96V, etc Specification Features: The board has a bright 3-digit display with 0.1 accuracy shows the setting value. Specifications: Input Voltage: AC 220V Display Accuracy: 0.1V Control Accuracy: 0.1V Output Type: Switch Size: 86*58*24mm Instruction: How to Restore Factory Settings: Press start and stop buttons together, and display shows 888 to restore factory settings. 6V 6V~7.2V 36V 36V~46.8V 12V 12V~14.4V 48V 48V~57.6V 24V 24V~28.8V 72V 72V~86.4V Note: Package Includes: 1 x Protection Board Package List