Red Lion Controls APLSP4B0 USNT Industrial Panel Meter

Red Lion Controls APLSP4B0 USNT is a numeric, 4-digit red-LED panel-mount display meter from the Apollo series. It features card-edge termination and operates from a 10 to 28 VDC supply, making it suitable for panel installations in industrial environments. The display shows four red digits and is designed for panel mounting with a compact form factor: 3.80 inches long, 1.95 inches high, and 6.33 inches deep (96.5 mm x 49.5 mm x 160.8 mm). The unit is IP65 rated for dust and water resistance and supports an operating temperature range of 0 to 50°C. The base product number is APLSP, and the model designation is APLSP4B0 USNT. This variant is listed as obsolete, meaning it is no longer manufactured by Red Lion. In practice, it serves as a compact, standalone numeric indicator in industrial panels where a four-digit red readout is sufficient for process display or basic counting, with panel-mount accessibility and card-edge termination for straightforward integration with panel wiring.