Model number: 4CHH CCTV-LD2 Description It is one of our newest product with advanced technology. CCTV burglar alarm system  built-in digital color quad processor, with four channels cameras with color display. Auto- monitor, auto-alarm. auto-detection, auto-taken photo, If no alarm triggered, it can  monitor location by four cameras. It connects with monitor and automatically divide four  channels for monitor, one channel can be set automatically take photo. Functions 1. High resolution 1024(H))* 512(V) 2. Double system(PAL/NTSC) 3. Built-in OSD menu and time-clock generator 4. Quad and single picture switch 5. Buzzer for video loss and motion detection 6. External alarm input and output NC/NO 7. External video replay, completely real-time PAL 50 Fields/sec, NTSC 60  Fields/sec, synchronous live monitoring and video recording 8. Replay single picture 2 zoom 9. PIP, POP functions 10. Intelligent pull-down menu 11. The chrome, brightness and hue of every channel is adjustable respectively  12. UP to 32 event records 13. Realize remote control when connected to PC