... E3Z-T81 THRU BEAM PNP Photoelectric SensorSeperate Send and ReceiveSensing Distance 15M Operating Temperature -25 °C (Min) 55 °C (Max)Output Type ... 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 ...