Top 5 Best sensor ultrasonic for sale 2016

1. Elegoo HC-SR04 Ultrasonic Module Distance Sensor for Arduino UNO MEGA2560 Nano Robot XBee ZigBee, Set of 5 (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Ultrasonic HC-SR04 Distance Measuring Transducer SensorHC-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. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse.

2. WYPH Ultrasonic Module HC-SR04 Distance Measuring Ranging Sensor for Arduino Pack of 10pcs (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Using IO trigger for at least 10us high level signalThe module automatically sends eight 40 kHz and detect whether there is a pulse signal back

3. Lego Mindstorms Ev3 Ultrasonic Sensor (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
Measures distances between one and 250 cm (one to 100 in.)Accurate to +/- 1 cm (+/- .394 in.)

4. SunFounder 2 pcs Ultrasonic Module HC-SR04 Distance Sensor for Arduino UNO MEGA R3 Mega2560 Duemilanove Nano Robot Rapsberry Pi 3, 2 & RPi Model B+ XBee ZigBee (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
Using IO trigger for at least 10us high level signalThe Module automatically sends eight 40 kHz and detect whether there is a pulse signal back

5. Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor Compatible With Arduino by Atomic Market (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Using IO trigger for at least 10us high level signal.Static Current(Max) : 2mA