7 in stock


This is a very simple and low cost circuit and comes complete with two 8 Ohm 0.25W speakers. Essentially, it is a single amplifier set up to act as a transmitter and a receiver through the use of a slide switch on the amplifier board. The slide switch may be set to speak or listen. The FK327 is an ideal class room project and the outcome is a useful device for inter-room communication or child monitoring.

Technical Specification

  • Power Supply : 4.5-6VDC
    Current:     8mA max. @ 4.5VDC (stand by),
    50mA max @ 4.5VDC (working)
  • Function Select : Slide Switch.
  • PCB Dimensions : 49.53mm x 34.29mm x 15mm   (1.95″ x 1.31″ x 0.6″)
  • Recommended Housing : FB03

Additional information

Weight 0.1 kg
Dimensions 19.5 × 15.0 × 2.5 cm