ELECTRET MICROPHONE

It is easy install. It simply replaces the old carbon transmitter in any G-Type and K-Type handset. It features a vandal-proof metal cover designed for payphone handsets. It efficiently transmits a pure, clear sound. It has extra sensitivity better reproduction fidelity. It eliminates the carbon granule packing problems found in the standard handset transmitters. It is a solid state pre-amplifier that utilizes telephone power. It maintains constant line-level and improves the signal-to-noise ratio in all acoustic communications. SPECIFICATIONS Type: Electric Condenser Microphone Response: -40±3dB at 1 KHz Output impedance: 150+300 ohm at 1 KHz Operation Voltage: 1.5V to 10V Drain Current: Max 0.3mA (Supply Volt: 2V) Signal to Noise Ratio: Above 60 dB