IP/SIP PAS audio Interface for PA system and intercom. Parameters configuration through WEB server. 5 Vdc or PoE Power supply. Audio Outputs 8ohms, 2W, AUX level (0 dB) and MIC level (-60 db). Audio input AUX level (0 dB) or MIC level (-60dB). Contact Input for call (intercom) or priority (PAS). Output relay contact activated by DMTF tone. Open-collector output contact activated with activated call.