20A Solar Charge Controller - 12/24VThe MSK-20A is a 3-stage intelligent series-type PWM charge controller. It is based on an advanced design using a microcontroller for digital accuracy and fully automatic operation. It can be used for 12V or 24V battery systems.Features: 3-stage intelligent Series Type PWM charging; Automatic battery voltage detection: 12V / 24V; 100% input and output within -35 degrees C to +50 degrees C; Electronic protections: overheating, overcharging, over-discharge, overload, and short circuit; Reverse protection: any combination of solar module and battery; Optional MSK-TS External Temperature Sensor; Applications: Recreational and service vehicles ; Off-grid grid; Portable charging kits ; Boats and marine crafts; Fieldwork or mobile offices; Telecommunications; Specifications: Input: 12V / 24V; Amps: 20 amps; Weight: 0.66 (lbs); Weight: 0.3 (kgs); Dimensions: 6.28 x 3.2 x 1.89 in.; Dimensions: 159.6 x 81.4 x 47.88 (mm); - cis2:mm5mnJlm -Quick Guide (pdf)Owner's Manual (pdf)