... ,over loading,over discharge,short protectDisplayLED:solar ,load,batteryLCD(option):Battery voltage ,Battery charge current,Load currentLED:solar ,load, battery,AlarmCommunication Interface(option)RS232Conversion efficiency97 ... temperature range-10°C~50°COperation humidity0~90% RHConnectionJunction end:Solar,Battery,Loadsize(H×W×D)47×175×112mm350×180×140mmweight0.5KG5KG6KG