... Type , Sensing Distance 15m , PNP Transistor OutputE3Z-T81 2M Through-Beam Type , Pre-Wired Type , Sensing Distance 15m , PNP ... Type , Sensing Distance 15m , PNP Transistor OutputE3Z-T81A 2M Through-Beam Type , Pre-Wired Type , Sensing Distance 10m , PNP Transistor ... OutputE3Z-T81A 5M Through-Beam Type , Pre-Wired Type , Sensing Distance 10m , PNP Transistor ...