Digital Meters - Various Inputs: Type - Digital Slave Display; Inputs - Parallel or Strobe BCD Data; Supply Voltage - Nominal - 10-28VDC; Display Type - LED; Display Size - 4 digit, 14.2 mm (0.56"); Display Range - 9999; Input Type-Range - Voltage: 3-10V (input trigger level); 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 - APLSP APOLLO