C09131H0041002 is an M16 D circular DIN connector from Amphenol's signalmate® C091 family, designed for industrial signal and power connections with enhanced environmental protection. The connector features a metal screw coupling system, thermoplastic dielectric material, and silver/gold contact plating, supporting 18 thru 28 AWG wire sizes with solder and crimp termination options. It provides IP65/67/69K ingress protection when mated, excellent EMI shielding capability, and operates across a temperature range of -40°C to +100°C. The connector demonstrates high insulation resistance (>10¹² O) and low contact resistance (<5 mO), with mating cycle ratings of =500 cycles for silver and =1000 cycles for gold plating. This connector is widely used in measuring instruments, equipment, and 4G/5G mobile radio networks where reliable power and signal integrity are essential.