Specifications for indoor unit: Model No.: Boya-0536C-M a) LCD: 5 inch TFT LCD Resolution: 960x234 b) Power source: DC 16V c) Power consumption: less 10W d) Operating Temperature: -15 ~ +50 e) Humidity: 45% to 95% f) Dimension: 185x130x27mm g) Weight: 0.95kg g) Installation: wall mount h) Wiring: 4 wires.