The Rangy 60A Rover MPPT Charge Controller is an intelligent negative ground controller. Built with protections against reverse polarity, short-circuiting, overheating, & more, This MPPT controller is also capable of self-diagnosing itself in the event of an error. Its durable shell protects against general wear & tear, & aluminum heat sink allows for heat dissipation. The Rover 60A can automatically detect 12V/24V/36V/48V systems & can handle various battery options such as gel & lithium. Pair this charge controller with the Rangy BT-1 & Rangy BT app to view your system's performance in real time & make parameter changes straight from your smart device. Specification Nominal Voltage: 12V/24V/36V/48V Auto Recognition Rated Charge Current: 60A Rated Load Current: 20A Max. PV Input Power: 800W/12V; 1600W/24V; 2400W/36V; 3200W/48V Max. PV Input Voltage: 150 VDC (25°C), 140VDC (-25°C) Self-Consumption: 0. 7W-1. 2W Operating Temperature: -31 °C to 113 °C Temperature Compensation: -3mV/°C/2V (default) Dimensions: 285 x 205 x 102mm (11. 22 x 8. 07 x 4. 00in) Weight: 7. 9lbs Enclosure: IP32 Terminals: 25mm2 4AWG