Features: _x000D_ Adopt advanced MPPT charging technology to automatically track the maximum power point, 10%~30% higher than charging efficiency the ordinary controller. _x000D_ Intuitive LCD display and graphic symbol, simple control buttons. _x000D_ Intelligent PWM charging mode with automatic temperature compensation. _x000D_ Adjustable control parameters of charging and discharging, settable load operating mode. _x000D_ All round protection functions: Battery reverse discharge, under voltage, reverse connection protection. etc. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Model: T40A_x000D_ Charging mode: MPPT + PWM _x000D_ System voltage: 12V/24V Auto _x000D_ Maximum current: 40A _x000D_ System load loss: 13mA _x000D_ Loop buck: 100mV _x000D_ Battery floating voltage: 13.8V(12V system) / 27.6V(24V system) _x000D_ Battery undervoltage protection: 10.6V(12V system) / 21.2V(24V system) _x000D_ Battery undervoltage recovery voltage: 12.6V(12V system) / 25.2V(24V system) _x000D_ Temperature compensation: -4mV/cell/C _x000D_ Temperature probe: NTC 100K thermostat _x000D_ Maximum open circuit voltage of solar panels: 18V-24V(12V system), 36V-48V(24V system) _x000D_ Mounting wire: 6AWG / 12mm2 _x000D_ Working temperature: -10~60 _x000D_ Storage temperature: -30~70 _x000D_ Humidity requirement: 90%RH, no condensation _x000D_ Dimensions: 187*97*61mm / 7.4*3.8*2.4in _x000D_ _x000D_ Package list: _x000D_ 1 * Solar Charge Controller _x000D_ 1 * Connector _x000D_ 1 * User Manual _x000D_ _x000D_ Note: _x000D_ Due to the difference between monitor and light effects, the pictures may not reflect the actual color of the item. _x000D_ Please allow slight error due to manual measurement. _x000D_ 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.