The AK1/A0-1H is a tubular inductive proximity sensor with 18mm diameter and 64mm body length, featuring a nickel-plated brass housing. It offers NPN/PNP configurations with normally open (N.O.) output, 5mm sensing distance, and flush mounting capability. The sensor operates at 600Hz switching frequency, has IP67 protection rating, and utilizes a 4-pin M12 quick-disconnect connector.