Electronic Eyepiece 2MP Digital USB Microscope Camera Imager for Science Education Classroom Item Type: Electronic Eyepiece Material: ABS, stainless steel Basic Parameters: Microscope Connection Mode: Diameter Approx. 23.2mm / 0.91in interface, directly inserted into the eyepiece barrel Output Signal: Video, CVBS Digital Image: None Image Sensor Size: 1/3 inch, Approx. 4.840 x 3.611mm / 0.19 x 0.14in Sensor Horizontal Resolution: 960 TV cable Sensor Effective Pixels: PAL: 968(H)x488(V), NTSC: 960(H)x480(V) Image Control: Manual or automatic white balance, manual or automatic exposure Minimum Illumination: 0.005 Lux Signal to Noise Ratio: 43.6dB Dynamic Range: 65.9dB Working Voltage: DC 12V (working current: 90mA) Power Consumption: 140mW Operating Temperature: -20-50℃ Relative Humidity: <= 90%