HC-SR04 Ultrasonic Sensor Distance Measuring Module for PICAXE Microcontroller Arduino UNO

Main Features: 1. Brand new Ultrasonic Sensor HC-SR04 Distance Measuring Module 2. Features 4-mode connections: VCC / trig (T) / echo(R) / GND 3. With electric frequency output signal from 0V to 5V 4. Has high precision up to 3mm 5. 5VDC power supply 6. Detecting distance is from 2cm to 450cm Module Working Principle: 1. Adopt IO trigger through supplying at least 10us sequence of high level signal 2. The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal 3. If there is signal returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receivingSpecification: General Model HC-SR04 Types Ultrasonic Distance measuring sensor module Size 6.0*4.0*3.0 cm Weight 70 g Package Weight One Package Weight 0.08kgs / 0.17lb One Package Size 6cm * 4cm * 3cm / 2.36inch * 1.57inch * 1.18inch Qty per Carton 200 Carton Weight 16.10kgs / 35.49lb Carton Size 30cm * 25cm * 20cm / 11.81inch * 9.84inch * 7.87inch Loading Container 20GP: 1777 cartons * 200 pcs = 355400 pcs40HQ: 4126 cartons * 200 pcs = 825200 pcs