Littelfuse ISS-105-ISO-3 is a compact and durable input-sensing module. It has a maximum load rating of 480 VA for pilot duty and 7 A for general purpose applications. The module features torque and wire terminations, with a wide input tolerance of ±10% and sense voltage of 5V DC. It operates in a humid environment of 10-95% non-condensing and offers IP20 protection. With an intrinsically safe circuit location and divisional and class group classifications, it ensures safety in various hazardous locations.