This ultrasonic ranging sensor is a non-contact distance measurement module with stable performance and high ranging accuracy featuring much smaller blind zone, wider sensing angle and a certain penetration power compared with other similar sensors. It can detect the distance between the ultrasonic wave and the target. Widely used in robot obstacle avoidance, parking management system, automatic control and so on. Average Current:Less than 8mA Response Time:100ms Detecting Range(Flat object):3-450cm Operating Temperature:-15-60℃ Reference Angle:60º Waterproof Grade:IP67 Measurement accuracy:±(1 + S*0.3%) Type:PWM pulse width/UART serial port/RS485 Colour:Black Material:Plastic Package Contents: 1 * Ultrasonic Ranging Sensor 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!