Model BL-CM421 BL-CM421S Product: Mini CCD Camera Series Technical Specification Model BL-CM421 BL-CM421S Image Sensor 1/4" Sharp CCD 1/4" Sony CCD Horizontal Resolution 420TVL Usable Illumination 0.5Lux/0Lux/F1.2 Signal System PAL/NTSC Power Consumption 130mA Power Supply 12VDC Gamma 0.45 S/N Ratio ≥48dB ≥50dB Video Output 1.0vP-P75 Auto Iris Video /DC Operating Temperature -20 to +60 Key Features High Quality Camera 12VDC Auto Iris Should you interesting in this product or others, please contact me at Julien at or Julien at . We will give you reply as soon as possible. Thanks in advance.