Product Features : 1. Heat and sound detection 2. 2.5 inch LCD screen with 480x234 resolution 3. OSD menu support easy operation and more functions 4. Small palm size of receiver for mobile usage 5. Channels scan and skip for multi-camera usage Big 2.5" TFT Screen Designing: The big 2.5 inch TFT screen with 480?34 resolution; provide high quality sharp and clear pictures. On Screen Display: All Functions can be controlled easily by pressing the button of the OSD menu key of the receiver Night Vision: For Day & Night surveillance, the camera is built in 7 infra-red lights which provide min. 5m night vision range. The night vision function will turn on or off automatically when environment gets dark or bright. Small palm size for mobile monitoring: Handhold design for easily mobile monitoring, carriable freely in effective area.