Audio Door Phones for Villa: Double Dingdong One doorway access system connects up to 5 indoor extention Remote Unlocking RVV 5 x 0.5 from the door station to the main infoor phone & RVV 4 x 0.5 from the main door phone to the extra door phone Power suppy: 20 W: 15 VDC System components: host, extention & power supplier

Color Video Door Phones: Have the function to talk-back, moniter, inner calling and conversation and unlock High performance Colour CCD camera, with infrared illumination, you can easily identify visitor even in dark Backlighting or the luminance is low as 0.1 Lux Noctilucent Keyboard Visual extentions are endued Function of voluntary monitoring Individual unlocking control circuit ensures the reliable unlocking One doorway system connects up to four indoor extension System Components: Host, extention, power supplier 30 seconds Ring, 120 seconds confidential conversation & 30

Multi Apartment Video Door Phones: One door station can support uoto 32 indoor extensions Have the function to talk-back, monitor, inner calling and conversation and unlock High performance CCD camera, with infrared illumination Backlighting or the luminance is low as 0.1 Lux Noctilucent keyboard Visual extensions are enduced function of voluntary monitoring System Components: Host, extension, power supplier 30 seconds Ring, 120 seconds confidential conversation & 30 seconds active surveillance