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Board Features:

1.Working Voltage: 5V(DC)
2.Static current: Less than 2mA.
3.Output signal: Electric frequency signal, high-level 5V, low-level 0V.
4.Sensor angle: Not more than 15 degrees.
5.Detection distance: 2cm-450cm.
6.High precision: Up to 0.3cm
7.Input trigger signal: 10us TTL impulse
8.Echo signal: output TTL PWL signal.s

How to operate the module:

1. Adopt IO trigger through supplying at least 10us sequence of high-level signals.
2. The module will automatically send eight 40khz square wave and automatically detect whether to receive the returning pulse signal.
3.If there are signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving. Test distance = pulse length * speed of sound (340m/s) / 2.

Order includes:

HC-SR04 Ultrasonic Module x 1

Weight 20 g
Dimensions 260 × 160 × 20 mm

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