3pcs HC-SR04 Ultrasonic Module Measuring Sensor Arduino Raspberrypi Robot

HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor for Arduino Features:* 100% Brand New and High Quality* Working Voltage : 5V(DC)* Static current: Less than 2mA.* Output signal: Electric frequency signal, high level 5V, low level 0V.* Sensor angle: Not more than 15 degrees.* Detection distance: 2cm-450cm.* High precision: Up to 0.3cm* Input trigger signal: 10us TTL impulse* Echo signal : output TTL PWL signalMode of connection:1.VCC2.trig(T)3.echo(R)4.GND* Use method: Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is used as a switching output when anti-theft module, and without the feet when ranging modules. Specifications:Color: Blue & SilverItem size: 44*20*15mm Package included: 3 x HC-SR04 Ultrasonic Module Distance Measuring Transducer Sensor