HC-SR04+ ULTRASONIC DISTANCE MEASUREMENT

*** infor can be found here and here

• HC-SR04+ use the high-end operational amplifier SGM324, so:
• HC-SR04+ has a wider operating voltage (3~5.5V)
• HC-SR04+ has a smaller operating current at the same distance (3mA)
• Software and hardware are fully compatible with the old HC-SR04 version
• Vcc Operating voltage: 3~5.5VDC
• Trig the transmit signal pin
• Echo the received echo pin
• Gnd Ground