Product Description 1.19 Modular system – up to 54 buttons + keypad Smart design, top material – high-quality stainless steel Flat design – can be mounted without wall cutting Water resistant Perfectly hermetic buttons Electronic part completely separated from the name plates Electric lock switch – controlled directly from the VoIP telephone Quality white backlighting of buttons – white LEDs DTMF according to RFC2833, in-band High-quality acoustic parameters Electronic volume setting (without cover opening) and HandsFree Electronic adjustment of backlightOptional AccessoriesVandal resistant Mask A robust metal cover for increased resistance against vandalism. The cover price includes a steel wall mounting box. It can also be purchased additionally.Additional switch Normally-open/Normally-closed contact (relay). Can be switched on for an unlimited period of time.
