Large Font LED Display Micro-processing meter that shows the value by Sensor Rate free setting Input Signal: AC V / A, DC V / A, RS-485, RTD (Pt100) BDC (dynamic or static) Font Size: 4-inch (10 cm) and 2.3 inches (5.8 cm) Displays 3 to 8-digits Fixed Aluminum shell, hang over walls, embedded Relay Output: 2 (customize)