The EMV 1025S-01 is a LCD Digital Voltmeter is fitted to the panel by locating its screw threaded stud through the hole, adding the washer and tightening the nut provided. Installation time is greatly reduced with only 3-wires to connect. 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.