Sick Retroreflective Photoelectric Sensor Barrel Sensor, 50 mm → 3.7 m Detection Range, Output Type: PNP, Electrical Connection: M12 4 Pin Connector, Maximum DC Voltage: 30V, Light Source: LED, IP Rating: IP67, Maximum Current: 100 mA, Response Time: <2 ms, Housing Material: PBT, PC, Maximum Operating Temperature: +70°C, Minimum Operating Temperature: -25°C, Mounting Type: Threaded, Series: V18, MPN: VL18-4P3640