This item contains only PCB board and Components , no battery holder / battery in the package.

Often in testing continuity or audio circuit function, where resistance measurement is not appropriate, an audio signal can be injected and picked up by an amplifier or audio under test or by monitoring the output using the amplifier and earpiece. This kit has two fixed output tones 500Hz and 1kHz which are easily recognized against a background of other signals.

Technical Information:
- Required Power Supply 3VDC
- Current consumption 1mA ( Max. )
- This circuit has 2 levels adjustment , 500Hz and 1kHz
- Power of signal 2.6V
- PCB size 1.59" x 1.59"

Download User Manual