... 2.4GHz,2.5 inch Wireless Surveillance System 2.4g Wireless receiver2.4GHz,2.5 inch Wireless Surveillance SystemReceiver SpecificationPower Supply: AC to ... cd/sq.m Contrast: 150:1 Light source: Shining Diode Wireless telecom parameterDemodulation type: FMInput VSWR: 2:1Receiving frequency: ISM 2400MHz ... .0 x 34.0 x 39.5 cm 2.4g Wireless receiver