• Ultrasonic hc-sr04 distance measuring transducer sensor
• HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object.
• ~Power supply: 5V DC; quiescent current: less than 2mA; effectual angle: less than 15°; distance: 2cm500cm; resolution: 0. 3 cm~
• Package Content: 5pcs HC-SR04 with a little gift