This solar system controller adopts the most advanced techniques and operates fully automatically. The PWM battery charging can greatly increase the lifetime of your battery and has various unique functions and quite easy to use features.Features:Adopts microcontroller to control， features strong adaptability and reliable function.Uses PWM charge mode， which can improve system efficiency and prolong the life span of the battery.LCD display and clear charge state， discharge state and battery power display.The product design accords with air flow， good heat dissipation effect. Many protective functions: short-circuit， over-load， over-charge， over-discharge， lightning protection， etc.Suitable for street and pathway lighting， parking area， bus station， etc.Specifications:Color: BlackMaterial: PlasticRated Charge Voltage: 12V / 24VRated Charge/Discharge Current: 10A Over Discharge Voltage: 10.5V/21.0VDischarge Recovery Voltage: 12.2V/24.4VVoltage of Stop Charging: 14.7V/29.4VWorking Temperature: -20~60°CTemperature Compensation: -3mV/°C/CellItem Size: 103 * 95 * 38mm / 4.05 * 3.74 * 1.5in (L * W * H)Item Weight: 128g / 4.53ozPackage Size: 11.3 * 10 * 5.5cm / 4.45 * 3.94 * 2.16in (L * W * H)Package Weight: 171g / 6.03ozPackage List:1 * Solar Charge Controller1 * User Manual (English)