18KHz. Running Temperature: -20 to 50 ° C. Dimensions: φ213 x 165mm. Network Wall Surface Mount Audio Speaker GEN-6011A03 Power Supply: DC24V/1A or POE. Communication Method: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Regularity Feedback: 100Hz https://royalty-free-music82693.like-blogs.com/29871694/the-duty-of-an-ip-paging-microphone-in-effective-work-environment-interaction