Specifications: 1) Screen: 4" flat CRT (B/W, 13mm neck diameter) 2) Type: 4FNG45 (Samsung Tube) 3) Rating voltage: DC12.5V (DC 10.8V available) 4) Current: DC 330?5mA 5) Input Signal range: 0.7~1.4Vp-p/75Ohm (CCIR/NTSC) 6) Transmit distance: 200m (transmit 1.0Vp-p, 75Ω signal through RG-59/64 cable) 7) Working temperature: -10 ~ +55癈 8) Storage temperature: -20 ~ +60癈 9) Relative humidity: 10 - 95% 10) Dimensions (W x H x D): 104 x 204 x 42mm