Based on optical sensor theory, it provides reliable and consistent performance. BA2M-DDT sensor offers a 2M sensing range, ensuring reliable detection in vast areas. Features a digital sensor output for and accurate signal transmission. With a 1ms response time, this photoelectric switch sensor swiftly detects changes. Max.15mA consumption current makes it an eco-friendly choice for long-term use. Optical Sensor Technology: Based on optical sensor theory, it provides reliable and consistent performance. Color: Red Material: ABS Package Contents: 1xPhotoelectric Switch Sensor Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.