Product Name: Wireless TFT Color LCD Video Intercom Indoor phone Specification: ? Display screen: 4 inch TFT Color LCD ? Panel: A040CN01 (AU Optronics Corp Class A+) ? Resolution: 480(W) x 234(H) ? Screen size: 84(W) x 64(H) (mm) ? Video signal: 75V 1Vp-p(CCIR/NTSC) ? Transmission distance: 200m ? Rating voltage: DC 12.5V±1V ? Operating current: DC 350mA±20mA ? Standby Power Consumption: 0.5W ? Operating Power Consumption: 12W ? Dimension: 110(W) x 175(H) x 40(D) ? Operating Temperature: -10?~50? ? Storage Temperature: -20?~60? ? Environment Humidity: 45%~90% Features: ? Built-in antenna for wireless communication ? Meet the European DECT standard ? Ringing bell chime when guests visit ? Video talking with visitor's image displayed on screen ? Multilateral intercom call by pressing "CALL" button ? Multilateral intercom talking while with no audio signal on the outdoor phone ? Remote unlocking function ? The situation outside door is always available at any time just by pressing the "MONITOR" button ? Stochastic voice recording and random spot monitoring function ? 30 seconds auto power-off when nobody answers; 90 seconds auto power-off after being picked up ? Real time clear surveillance on surrounding environment ? Intelligent microcomputer control ensuring steady performance ? LCD display menu supports Chinese, English, Deutsch, Fransais, Espanol, Ittaliano and Japanese ? Multi-ports expansible to connect Image memorizer for image storage ? Auto information preservation when power-off, automatic checking and recovering with built-in integrated circuit ? Environment-friendly ABS casing with fashionable style and delicate appearance ? Adjustable Brightness, Contrast and Volume ? Alarm button to initiate annunciator ? Power-on indicator ? "Line-busy" and "Message" function ? Night vision surveillance function ? A & B two defence areas button to switch between the cameras installed outside the house ? "REFERENCE" button to check out the visiting history of the past few days ? Flexible installation methods: wall-mounting or putting on desk ? Compatible of all kinds of outdoor phones