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.

1. Type: Electric Condenser Microphone
2. Response: -40±3dB at 1 KHz
3. Output impedance: 150+300 ohm at 1 KHz
4. Operation Voltage: 1.5V to 10V
5. Drain Current: Max 0.3mA (Supply Volt: 2V)
6. Signal to Noise Ratio: Above 60 dB

                                    EMS-93 ELECTRET

1. Type: Electric Condenser Microphone
2. Response: -40±2dB at 1 KHz.
3. Output Impedance: 1000±300 ohm at 1 KHz.
4. Operation Voltage: 1.5V to 10V
5. Drain Current: Max. 0.3mA (Supply Volt: 2V)
6. Signal to Noise Ratio: Above 40dB
7. Weight: 14.18 grams (o.5 oz.)
8. Dimension: 45.8x0.2x14.5±0.5mm

                  EMS-93L ELECTRET, LOW OUTPUT

1. Type: Electric Condenser Microphone
2. Response: -44±2dB at 1 KHz.
3. Output Impedance: 1000±300 ohm at 1 KHz.
4. Operation Voltage: 1.5V to 10V
5. Drain Current: Max. 0.3mA (Supply Volt: 2V)
6. Signal to Noise Ratio: Above 40dB
7. Weight: 14.18 grams (o.5 oz.)
8. Dimension: 45.8x0.2x14.5±0.5mm

1. Type: Dynamic Type Transmitter
2. Response Range: 300-3300 Hz.
3. Frequence Response: -66±3.5 dBV
4. Impedance: 150±30 ohm
5. Weight: 34 grams (1.2 oz.)
6. Dimension: 35±0.3x17.8±0.3mm

The Confidencer fits all G-Type handsets.The assembly consists of three parts: a confidencer,
a transmitter ring, and a retainer half ring. With the Confidencer, the clarity of the telephone conversation will be improved for both parties whenever the surrounding background noise
is a problem.

1. Sensitivity: -16 dB re:1mW/Nm-2 for high noise areas.
                      -10dB re:1mW/Nm-2 for moderate noise areas.
2. Noise Cancellation: 17 dB for high noise areas.
                                    14 dB for moderate noise areas.
3. Carbon Noise: Less than 0.001 volts
4. Nominal Impedance: 50 ohms
5. Frequency Range: 300 to 3500 Hz.
6. Recommended Operating Current: 50 to 100 mA
7. Maximum Intermittent Current: 250mA