handsfree色视频门的电话

JB-5000 Multi-apartment Intercom System Features The system is applicable for single buildings. Besides the common functions of calling/answering/unlocking, there are more useful features as follows:1.Modularized of door panels.2.Bus cable, PLUG & PLAY.3.Address can be programmed automatically(FREE ADDRESS).4.Up to 64 apartments.5.Cast aluminium panel, flush mount.6.Night viewing with IR LED.7.Easy to replace name tags.8.Card reader is optional.9.Expand up to 2 indoor phones in each apartment.10.Handsfree indoor phones.11.Picture memory.12.Burglar alarms.13.Available to connect more door stations. Door stations technical parameters: Camera: 1/3’’ CCD Door panels: Modularized Min. illumination: 0.01LUXVideo Output: 1Vp-p/75Audio SNR: ≥50dB Audio distortion: ≤5% Working voltage: DC18 V±10% Working current: ≤500mA Power waste: ≤160mA(static);≤410mA(active); Environment Temperature: -40 70°c Indoor phones technical parameters: Display: 4 CRT/TFT-LCD, or 3.5'',5'',5.8'' & 7 TFT-LCD Display: 420TV lines(B.W), or 300,000 pixels(color) Working voltage: DC12V±10%(audio);DC18V±10%(vedio); Audio SNR: ≥50dB Audio distortion: ≤5% Working current: ≤150mA(audio);≤500mA(vedio)Power waste:≤30mA(static);≤80mA(active)Power waste:≤60mA(static);≤210mA(active)Environment Temperature:-10 +55°c