Omron Retro-reflective Photoelectric Sensor 3 m Detection Range PNP IP67 Block Style E3SCR61. Electrical Connection: Pre-Wired Cable. Maximum DC Voltage: 30V. Optical Technology: Phototransistor. Light Source: LED. Maximum Current: 100 mA. Response Time: 1 ms. Housing Material: Die Cast Zinc. Maximum Operating Temperature: +55°C. Minimum Operating Temperature: -25°C.