Features: 0.9GHz transmission interference free from crowded 2.4GHz wireless devices 2.4-inch TFT LCD, resolution: 480 x 240 pixels Motion/voice detection optional Easily bypasses walls and barriers for longer range Optional motion and voice detection Night vision effective range: 5m Built-in microphone in camera and speaker in receiver for audio monitoring 2 optional channels to avoid possible interference Up to 100m (330-feet) transmission range in open space Specifications: General: Transmission frequency: ISM 900 to 930MHz Transmission power: 10mW/CE and 2mW/FCC Operating frequency: 906 to 924MHz Unobstructed effective range: 100m (minimum) Modulation mode: FM Operating temperature: -10 to +50 and +14 to +122 degrees Celsius Operating humidity: ≤85% Camera: Imaging sensor type: CMOS Picture total pixels: NTSC: 720 x 480 pixels Horizontal resolutions: 380 TV lines Minimum illumination: 0 Lux Night vision distance: 5m View angle: NTSC: 55 degrees Bandwidth: 18m Battery working time: 8 hours (IR off) Motion alarm distance: 8m Sound detection sensitivity: >65dB Consumption current (maximum): 120mW (IR on) Power supply: +8V DC Dimensions: (W) 86 x (D) 48 x (H) 135mm Weight (about): 146g Receiver: Screen type: 2.4-inch TFT LCD Effective pixels: 480 x 240 pixels Video system: NTSC/PAL Color configuration: RGB Receiving sensitivity: ≤-85dBm Consumption current (maximum): 200mA Battery working time: 5 hours Power supply: +8V DC Dimensions: (W) 86 x (D) 54 x (H) 143mm Weight (about): 142g