16KHz. Operating Temperature level: 0 ～ 45 ℃. Measurements: 144 * 144 * 34.1 mm. Network Horn Audio Speaker GEN-6391A03 Power Supply: DC24V/2.7 A or POE. Communication Protocol: TCP/IP, UDP, SIP, ONVIF. Signal-to-Noise Ratio: > 80dB. Regularity Action: 100Hz https://bluetooth-speaker26914.blogrenanda.com/35983749/improve-your-communication-with-an-advanced-ip-pa-system-today