18KHz. Operating Temperature: -10 ～ 55 ℃. Measurements: 296x140x130mm. Network Sound Bridge GEN-3101A01 Power Supply: POE. Communication Method: TCP/IP, UDP, SIP. Signal-to-Noise Proportion: > 85dB. Regularity Feedback: 50Hz https://gregorydausn.qodsblog.com/30029795/change-your-workplace-environment-with-spon-communications-solutions