Features: 1. Heat and sound detection 2. 2.5" LCD screen with 480 * 234 resolution 3. OSD menu supported for easy operation and more function available 4. Small palm size of receiver for mobile usage 5. Built-in 9 IR lights for 5m night vision range 6. Channels available to Channel scan and channel skip for multi-camera usage 7. Big 2.5" TFT Screen Designing The big 2.5 inch TFT screen with 480*234 resolution 8. All Functions can be controlled easily by pressing the button of the OSD menu key of the receiver. 9. A circuit for automatically controling amplifier gain in order to maintain a constant output voltage 10. With a varying input voltage within a predetermined range of input-to-output variation. 11. The PIR sensor could detect the heat which human body emits Specification: 1. Imaging sensor: CMOS 2. View Angle: 55 degree 3. Frequency: ISM 2, 400MHz~2, 483MHz 4CH* 4. Transmission Power: 10mW/CE; 2mW/FCC 5. Power Supply: DC 8V/300mA & 3*AAA Batteries 6. Dimensions(W*L*H): 87mm*85mm*99mm 7. Effective Range: 100Min 8. Operating frequency: 2414MHz/2432MHz/2450MHz/2468MHz CE/FCC/RoHs are available