Specifications: This battery charging controller has the function of parameters adjustable, power failure memory function. Whenthe battery is under voltage, disconnect the load and connect the charger. When the battery is over voltage, disconnect the charger and connect the load. Features: Whenthe battery is under voltage, disconnect the load and connect the charger. When the battery is over voltage, disconnect the charger and connect the load. This battery charging controller has the function of parameters adjustable, power failure memory function. The control voltage is 10V-60V, and with high accuracy of 0.1V. This battery charging controller is suitable for storage battery, lithium battery, etc. This charging controller protects battery undervoltage, protects battery overcharge, protects load control. 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: 44g Voltage 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.Longpress 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:Underthe 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 originalfactory 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 Controller Note: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..