Specifications: Model: YX815Control voltage: 10V-60VControl current: 20AControl accuracy: 0.1VVoltage error: ±0.1VScope: storage battery, lithium battery, etcPacking: antistatic bag Size: 7.9 x 4.3 x 2.8cm/3.11 x 1.69 x 1.10inchInstallation size: 76 x 39.5mm/2.99 x 1.56inch Weight: 44gVoltage setting method:In setting state(digital tube flashes)S1: up-regulated voltageS2: down-regulated voltageS1 undervoltage setting button (charging startup, load stop):1.Under normal display voltage, press the S1 button to display the charging start(load stop )voltage value.2.Long press the s1 button digital lamp tube flashing, and set charging startup voltage)load stop) value through s1 and s2 buttons.S2overvoltage setting button (charging stop, load start):1.Under normal display voltage, press the S2 button to display the charging stop )load start up)voltage value.2.Long press s2 button digital lamp tube flashing, through s1 and s2 buttons to set charging stop )load start up)voltage value.Restore factory Settings:Under the state of electricity, press the buttons of s1 and s2 at the same time, and the digital tube displays 888, that is to restore the original factory setting success.(Note: when s1 cannot up regulate the voltage, set s2 first, and s2 cannot down regulate the voltage, set s1 first)Package Included: 1 x Battery Charging ControllerNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.