Digital Meter - Various Inputs: Type - Digital Voltmeter; Inputs - AC Voltage; Supply Voltage - Nominal - 230VAC; Display Type - LED; Display Size - 3 1/2 digit, 14.2 mm 0.56 in; Display Range - 199.9; Input Type-Range - AC Volts: +/-1.999V, +/-19.99V, +/-199.9V, +/-300V; Operating Temperature - 0 to 60 deg C 32 to 140 deg F; Enclosure Material - Black Die Cast Metal Bezel, Plastic Insert Case; Enclosure Rating - NEMA 4, IEC IP65 front cover; Mounting - Panel Opening HxW: 1.77 x 3.62 in 45.0 x 92.0 mm; Manufacturer Series - APLV APOLLO