1、Charge Control: The tracking efficiency is larger than or equal to 99.5%, and the maximum conversion efficiency is 98%, 12V 24V automatic working system voltage identification and automatic saving function, two voltage disconnection levels, charging power and current limiting function. 2、Safer Working: Built in reverse polarity, overcharge, over discharge, overload, short circuit and reverse current protection. It protects the battery from being overcharged by the solar module and over discharged by the load. 3、Reliable Uses: The charging process is optimized to extend battery life and improve system performance. It includes 4 stage battery charging, batch, boost, float and equalization, and temperature compensation to extend battery life and improve system performance. 4、Better Design: Supports PC software, APP and MT-50. Automatic identification of 12V and 24V DC system voltage. Also compatible with various deep cycle battery options, sealed, gel, flooded and lithium. Various load control methods. 5、Clear Display: The 40A MPPT controller has a black light LCD screen for displaying system information and operating status. Die cast aluminium design effectively dissipates heat. 6、Wide Matching: Support Lead Acid: Sealed by default), gel, AGM, fluid, user 9-17V at 12V, 18-34V at 24V, and for LiFePO4 4s 12V, 8s 24V, Li NiCoMn O2 3s 12V, 6s 24V, user 9-34V and user defined. Battery temperature compensation function, overheating power reduction function. 7、Good Stability: With RS-485 communication bus interface and communication protocol, detailed parameter settings are set by for EPEVER accessories and PC software. The temperature sensor collects the temperature of the battery or controller, and performs temperature compensation on the control parameters. 1 x Solar Charge Controller1 x Solar Charge Controller User Manual1 x Solar Charge Controller Accessory1 x Temperature Probe1 x Host Computer Connection Line1 x Remote Control Header1 x Remote Control Header User Manual1 x Remote Control Header Connection Line8 x Screw4 x Expansion Screw4 x Rubber Pad Item Type: Solar Charge ControllerApplication: It can buck high voltage solar arrays and charge low voltage battery packs. Widely used in RVs, communication base stations, household systems, field monitoring and other fields. System Voltage: 12V 24VRated Charge Current: 40ARated Discharge Current: 40ARated Charge Power: 520W at 12V, 10400W at 24V. Maximum PV Array Power: 520W 12V, 1040W 24V. Maximum PV Open Circuit Voltage: 92V at 25 ℃, 100V at minimum operating temperature. Self Consumption: ≤12mADischarge Circuit Voltage Drop: ≤ 0.23VTemperature Compensation Coefficient: -3mV/℃/2V in default. Grounding: Negative GroundRS485 Interface: 5VDC 100mALCD Backlight Time: 60s in default. Working Environment Temperature: -25℃~+50℃, full load operation. Storage Temperature Range: -20℃~+70℃Relative Humidity: 95%, N.C.Enclosure: IP30Recommended Cable: 6AWG, 16mm². MT-50 Features: 1. Automatically identify the controller and display relevant parameter data. 2. The large LCD information screen displays all operating data and system working status. 3. Simple and convenient operation. 4. Real time alarm of fault information. 5. The communication distance based on RS485 is longer. 6. Multiple load control modes, manual control, light on and off, light on and timer, time control. 7. Battery Type Selection: Gel, sealed, submerged and user, programmable. 8. Programmable parameters. 9. Energy statistics display function. 10. Remote temperature sensor (TS-R). 11. Cable Length: Approx. 3meter / 9.84ft. 12. Connector: 0.0125ft /2P. 13. Test Temperature: -131℉~257℉. 14. If the controller is not connected to TS-R, the battery charge and discharge temperature is set to 25°C by default without temperature compensation. RS485-150U Cable: This cable is used to monitor each controller on the network and update the firmware using the for Solar Station PC software.