- 2 Amp relay contacts for door / gate or SL-2 Strobe Light (DOD 242) control- Blue Call Connected LED indicator- SIP compliant (see Product Manual for list of compatible IP-PBX phone systems)- PoE powered (class 1, <4 Watts)- Automatic Noise Canceling (ANC) feature for proper operation in noisy environments- VoIP audio detection eliminates the need for Push to Talk mode- Handsfree operation- T-10 Torx security screws for added security- Laser etched graphics- Programmable to dial up to 5 numbers- Cycles th