main features
The COTT-QD20/S small hemisphere microphone is designed specifically for audio monitoring, with the advantages of a large monitoring range and high sensitivity.
Hemispherical appearance, with a four line dot matrix design on the surface, providing better sound collection for environments ranging from 10 to 80 square meters.
Built in circuit AGC gain control, power amplification circuit, maximum noise elimination, ensuring output strength.
Adopting Dolby directional logic surround sound system, effectively reducing high-frequency and low-frequency noise in the environment and circuit.
The microphone is equipped with lightning protection, power polarity reverse protection, ESD electrostatic protection, and power protection modules.
Ultra long audio signal transmission technology, using RVVP3 × 0.5mm2 shielded cable to transmit 3 kilometers without distortion
Integrated professional pre audio amplification circuit, directly driving active speakers, hard disk recorders, headphones, and more.
● Suitable for synchronous monitoring and recording in environments such as banks, schools, interrogation rooms, prisons, etc.
● Obtained the patent certificate from the China National Intellectual Property Administration of the People's Republic of China.
Obtained the computer software copyright from the National Copyright Administration of the People's Republic of China.
● Passed the EU Environmental ROHS Directive 2002/95/EC construction standards.
● Passed the EU CE standard and the highest inspection synchronous recording and video system construction specifications.
● Tested according to relevant standards of the Federal Communications Commission (FCC) and corresponding system construction specifications.
Tested by the Security and Police Electronic Product Quality Testing Center of the Ministry of Public Security.
Certified according to the IAF UKAS international quality management system standard ISO9001:2008.

Wiring instructions