High-performance diffuse reflection laser sensor module designed for precise obstacle detection and avoidance in a wide range of DIY and professional electronics projects Integrates a focused laser emitter and high-sensitivity receiver to achieve accurate obstacle avoidance and distance detection. Ideal for line-following cars, smart robots, and automated equipment Simple digital signal output makes integration and coding easy for beginners and professionals Uses diffuse reflection principles to detect objects with various surface colors and materials. Offers stable performance in indoor environments for robotics, smart home, and interactive electronic projects Equipped with an onboard potentiometer that allows manual adjustment of detection distance and sensitivity Effective detection distance: 0.8m (typ), 1.5m (max) Operating voltage: 2.5V - 5.0V Mounting hole size: 2.0mm Due to different batches, there may be differences in product appearance and printed text, which will not affect use Color: Blue Material: PCB Package Contents: 1*Diffuse Reflection Laser Sensor Module 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.