TBP18A15 Speaker/Microphone Intercom Voice Module

TBP18A15 Speaker/Microphone Intercom Voice Module is a handsfree intercom voice module for sending and receiving audio with automatic switching between transmit and receive states. It operates in half-duplex mode and is designed for intercom communication circuits. The module includes audio input and output connections, microphone sensitivity adjustment, and speaker connection support. It also provides balance adjustment to help reduce unwanted noise and howling.

Features of TBP18A15 Speaker/Microphone Intercom Voice Module

• Automatic transmit/receive switching
• Half-duplex intercom operation
• Microphone sensitivity adjustment
• Speaker output support
• Audio balance adjustment
• Volume adjustment support
• Internal or external microphone power selection

Specifications of TBP18A15 Speaker/Microphone Intercom Voice Module

• Dimensions: 31x50 mm
• Power supply: 9-12V DC
• Microphone sensitivity setting: 56 dB
• Audio output: Connectable to 8 ohm speakers
• Volume adjustment: With RP2 resistor
• Microphone power: Internal or external with J1 settings
• Audio balance adjustment: For removing extra noise
• JP1: 9-12V power input
• JP2: Microphone sensitivity adjustment
• JP3: Audio signal input and output (A audio signal, G ground)
• JP4: Active control input and RING input
• JP5: 8 ohm speaker connection
• RP1: Audio balance adjustment
• RP2: Volume adjustment

How to Use TBP18A15 Speaker/Microphone Intercom Voice Module

1. Connect the 9-12V DC power supply to JP1.
2. Connect the audio signal lines to JP3.
3. Connect the 8 ohm speaker to JP5.
4. Set microphone power using J1 if needed.
5. Adjust sensitivity, balance, and volume using JP2, RP1, and RP2.

More Info

• Designed for intercom communication systems.
• Includes active control input and RING input on JP4.
• Suitable for handsfree voice communication circuits.