The Lascar EMV 1025S-01 is a 3 1/2 digit LCD voltmeter with 12.5 mm (0.5") digit height. It features a full scale reading of 200mV and a decimal point fixed at 199.9. The meter can be panel mounted by drilling a 5.5mm (0.22") hole. Connection to the meter is via three wires. This is a popular part, normally stocked in high quantity and suitable for new designs. Full details of the EMV 1025S-XX are listed on the datasheet, downloadable from this page.