Pick-up Microphone CCTV Audio Metal Sound Security Surveillance Monitor 20-21KHz

Description

This sound pick up microphone contains HiFi processing chip with low noise performance, and contains dedicated AGC circuit. Listening range 10-100 Square meters. It's been widely used in prisons, shopping malls ... etc.
This sound pick up microphone contains HiFi processing chip with low noise performance, and contains dedicated AGC circuit. Listening range 10-100 Square meters. It's been widely used in prisons, shopping malls ... etc.
Note:
1. Not include power adapter
2. item with logo "SUPR" and Chinese characters
Packing List (bulk pack):
1 x Sound pick up mic
1 x Manual
Features:
Built-in automatic gain control (AGC) circuit
Small power consumption
Long transmission distance arrive 3000M
High-fidelity low noise processing chip, effectively suppressing ambient noise
Adapted to banks, prisons, examination room, shopping malls, and other places
Plug and play
Specification:
Audio transmission distance: 3000M
Listening range: 10-100 square meters
Sensitivity: -30db, 1000Hz
Frenquency range: 20Hz-21KHz
Output Impedance: 600Ω-1000Ω Non - equilibrium
Output signal amplitude: 2.5Vpp/-25db
Operation voltage: 12V DC
Work current: 20mA
Wiring: Black (power-), red (power+) white (audio+)
Material: metal
Operation temperature: -30℃-60℃
Dimensions φ: 50 x 23mm
Weight: 70g