16KHz. Operating Temperature level: 0～45 ℃. Dimensions: 144 * 144 * 34.1 mm. Network Paging Console XC-9037N Power Supply: DC12V/1.5 A. Show: 4-inch touchscreen, resolution 480 * 480. Interaction Procedures: TCP/IP, UDP, SIP. Signal-to-Noise Proportion: > 80dB. Regularity Response: 100Hz https://bluetooth-speaker39516.pointblog.net/enhance-your-announcements-with-a-high-quality-ip-paging-microphone-71736061