Alt: NBB0.8-5GM25-E2, This is the Recommended Replacement for 553853 (3RG4210-0AG00-PF)

Inductive Proximity Sensor, Ø5mm, Flush, 3-Wire DC, 10-30VDC, 0.8mm Range, PNP NO, 0 to 200mA, Reverse Polarity Protected, 2m PVC Cable, Stainless Steel Housing, PC Sensing Face, Ambient Temperature: -25 to 70 °C (-13 to 158 °F), IP67