18KHz. Operating Temperature: -20 to 50 ° C. Capacities: φ213 x 165mm. Network Wall Surface Mount Audio Speaker GEN-6011A03 Power Supply: DC24V/1A or POE. Interaction Procedure: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Regularity Response: 100Hz https://zanekljig.aboutyoublog.com/31458763/picking-the-right-ip-speaker-secret-features-to-consider