18KHz. Running Temperature level: -20 to 50 ° C. Dimensions: φ213 x 165mm. Network Wall Surface Mount Speaker GEN-6011A03 Power Supply: DC24V/1A or POE. Interaction Method: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Regularity Action: 100Hz https://jaredskzlv.blogsmine.com/30467239/discover-the-perks-of-using-an-ip-speaker-for-clearer-announcements