ITT 2N-9153101 Helios IP UNI - 1 button
ITT - 1 button - Helios IP UNI - Easy installation - 1W Speaker - 1 back-lit button - Tamper switch - Cost effective door IP Intercom solution - Relay controlled by DTMF - Stainless steel front panel - Compatible with 2N(R) Helios IP Manager