What this sensor is and what it brings to your panel
The E3T-FT11 is a complete through-beam set – transmitter and receiver in one pair – built to detect opaque objects down to 1.3 mm diameter at 500 mm range. NPN output, Light-On switching, and a 1 msec response time make it a straightforward fit for PLC inputs that expect a sinking signal on object presence. The body is rectangular PBT, IP67-rated, with a right-angle sensing face and a 2 m prewired cable. Power it with 12-24V DC; it draws less than 50 mA on the output.
What the ratings mean for your panel
Sensing at 500 mm; detects opaque objects as small as 1.3 mm. 1 msec response, IP67 rated, with built-in output and supply protection.