ZSM-76 - Do-it-yourself kit, milivoltmeter with LED display

The instrument is an application of AC/DC converter designed by INTERSTIL,
with its "heart" based on the ICL7107 integrated circuit.
This device can be used as s base for many measuring instrument constructions
that are able to transform measured value into a voltage.
Basic measuring range: 200mVDC Power supply: 5VDC. PCB: 75x65mm.