Name: Wireless Video Door Phone Model: WL-9002 Features 1. 2.4GHz lauch frequency , barrier-free remote control distance is between 180-400m; 2. With micro-processing technology,auto-remote control , excellent performance and high reliability; 3. The TFT3.5" digital color LCD for monitor; 4. CMOS 300,000 pixel for camera; 5. Clear night-viewing;24 hours monitoring,calling,speaking and unlocking remote controlling etc; 6. One cameras can support 6 pcs monitors at most further information,please contact the salesman; 7. The mini USB data output for monitor built-in high capacity rechargeable Lithium battery; 8. The monitor can take/save/view more than 200 pcs of photos automatically;