SMAKN LCD 10A PWM Solar Panel Regulator Charge Controller 12V/24V 120W/240W with Dual USB Charge recovery voltage 13.6V/27.2V  0.2 (can be set),Over-discharge protection voltage 10.5V/21V (can be set) Overcharge protection voltage 15.5V/31.5V Temperature compensation coefficient-5mv /  / 2V Working environment: -30  ~ 60 PV controller CM3024Z products can be applied 12V and 24V Using MCU control charging and discharging state, all work processes are using software control, high precision and high reliability. Algorithm using the maximum power, with strong charge, balanced charge, float charge mode PWM regulator three-series, which greatly improves the efficiency of the product charge Automatic detection and tracking external battery temperature, the built-in temperature compensation function With full electronic protection functions: over-charge and over-discharge protection, overload current protection, short circuit protection, reverse, all to protect the electronic components are not damaged Charging, discharging, charge through LCD screen display The use of advanced SMT chip technology, PCB board strict moisture, corrosion, insulation, waterproofing Rigorous scientific shape design, the use of a high level of protection means, using pure aluminum pan to heat, extend product life better