18KHz. Running Temperature level: -20 to 50 ° C. Capacities: φ213 x 165mm. Network Wall Mount Audio Speaker GEN-6011A03 Power Supply: DC24V/1A or POE. Communication Procedure: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Proportion: > 80dB. Regularity Reaction: 100Hz https://bluetooth-speaker26914.blogrenanda.com/35983749/improve-your-communication-with-an-advanced-ip-pa-system-today