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 Method: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Frequency Response: 100Hz https://trevorbvnkq.wssblogs.com/30042079/transform-your-office-atmosphere-with-spon-communications-solutions