2N Helios IP User manual, 1510 v1.11 - Manual (Page 9)

Product Description 1.1
9
 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 backlight
Optional Accessories
Vandal 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.