18KHz. Running Temperature: -10 ～ 55 ℃. Measurements: 296x140x130mm. Network Audio Bridge GEN-3101A01 Power Supply: POE. Communication Procedure: TCP/IP, UDP, SIP. Signal-to-Noise Ratio: > 85dB. Regularity Response: 50Hz https://opticalnearme37045.vblogetin.com/35535561/change-your-workplace-atmosphere-with-spon-communications-solutions