The PD70CNT12NC is a through-beam photoelectric sensor designed for doors and entrance control, featuring a normally closed (NC) NPN transistor output configuration. It operates with a 12 m sensing range using modulated infrared light at 850 nm wavelength, with a supply voltage range of 10 to 30 VDC and continuous output current capability of 100 mA. The sensor includes protection against reverse polarity, short circuits, and transients, along with an emitter mute function for testing and evaluation. With an IP67 degree of protection, operating temperature range of -25°C to +55°C, and CE/UL325 approval, this sensor is ideal for automated door systems, entrance control, and security applications requiring reliable object detection in various environmental conditions.