E3T-SR21-M1TJ 0.3M,SENSOR RETROREFL 0.3M LT ON NPN
E3T-SR21R 2M,SENSOR RETROREFL 2M LT ON NPN
E3T-SR22,
E3T-SR22 2M,SENS OPTO REFL 200MM PREWIRE MOD
E3T-SR22 5M,SENSOR RETROREFL 5M DK ON NPN
E3T-SR22-M1TJ 0.3M,SENSOR RETROREFL 0.3M DK ON NPN
E3T-SR22R 2M,SENSOR RETROREFL 2M DK ON NPN
E3T-SR23 2M,SENSOR RETROREFL 2M LT ON PNP