1. Protection function: Temperature protection: 75°C/167°F; Fan on temperature: above 45°C/113°F; Fan off temperature: below 40°C/104°F; PV reverse polarity protection: (only for Voc below 100V); PV: (Voc over 180V the controller will burn through); Battery overcharging power protection; Battery Overcharge Voltage Protection; Battery Low Voltage Protection. 2. 100% MPPT Regulator Intelligent Maximum Power Point Tracking Technology. Builtin performance controller. Automatic battery voltage detection 12V/24V/48V. Threestage charging optimizes battery performance. 3. Housing: Acoustic noise: less than 40dB. Cooling: Forced air cooling. Components: Industrial grade. Size: 21.5 x 11.5 x 5 cm. Net weight: 1.3 kg. Certifications: EN 621091, EN 607301, EN IEC 6100063, EN IEC 6100061. Protection category: IP21. Environmental conditions: Indoor. Operating temperature: 20°C to 55°C. Storage temperature: 40°C to 75°C. 4. Multifunctional LCD display. Output current limit protection. Overcharge protection. Overtemperature protection. Easy wall mounting. No additional device required for parallel connection. No limit on the number of devices connected in parallel. Suitable for leadacid, vented, and gel battery types. Configure system parameters remotely and track realtime data online. Compatible with iOS and Android devices.