18KHz. Operating Temperature: -20 to 50 ° C. Capacities: φ213 x 165mm. Network Wall Mount Speaker GEN-6011A03 Power Supply: DC24V/1A or POE. Interaction Procedure: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Regularity Reaction: 100Hz https://communications-system59136.theisblog.com/30168038/the-ultimate-guide-to-establishing-your-ip-pa-system-effectively