Description ACOPOWER Midas 40A MPPT Solar Charge Controller 100V PV Negative Ground with MT50 Remote Meter Solar Panel Controller Works with 12/24V Battery AGM and LiFePO4 Battery Charger(New Arrival 2020) If you have any questions regarding this product, please call us at 1 (626) 838-5511 or email support@acopower.com. Key Features Negative Grounding Design and advanced MPPT control algorithm make it charging efficiency no less than 99.5%, it maximize the charging power as a way of saving the energy. Work with 12v /24v battery (Automatic system voltage recognition); charged by solar panels according to the system. The Midas's charging process has been optimized for long battery life and improved system performance.It includes a 4-stage battery charging (Bulk, Boost, Float, and Equalization) and temperature compensation increase your battery life and improve your system's performance MT-50, a new-generation remote display for HY Series MPPT controllers is an associated display device which supports both the latest communication protocol and the voltage technology standard of solar controllers. Package List 1 x Midas 40A Solar Charge Controller 1 x MT-50 1 x Temperature Sensor 2 x User Manual User Manual ?40A User Manual ?MT-50 User Manual