... 2, Double Case protect Camera device, continuing work temperature lower than 50°C;3, Use high quality components ... Distance 100 Meters.8, Optional temperature control system, suitable for working in high or low temperature environment. Science, beautiful and fixedness ... RS485/ RS232Gama modulus 0.45Power supplyDC12V,130~350mAWork temperature 0°C~+70°C Dimension 50mmX60mmX90mmPackage Include:1x Security ...