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Product review for M-Egal HC-SR04 Ultrasonic Distance Measuring Display Module for Arduino

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Amazon Price: N/A (as of August 14, 2018 9:08 pm – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

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Product Description:

About Ultrasonic Range Sensor module:
This performance of the ultrasonic sensor distance measuring module is stable, measure the distance accurately. The module is with High precision, blind spots (3cm) super close. This module provides a full set of ranging process.

Model: HC-SR04;
Operating voltage: 5V DC; Static current: Less than 2mA; IO logic voltage: 5V;
Sensor angle: Not more than 15 degrees;
Detection distance: 2cm~450cm;
High precision: Up to 3mm;
Mode of connection: VCC / trig(T) / echo(R) / GND;
Adopt IO trigger through supplying at least 10us sequence of high level signal;
The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal;
If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving.

About 4-Digit Display module:
The module is based on a decimal point display module, it displays four digital tube (0.56 inches), only two signal lines can make MCU control four Digit 8-segment LED. Can be used to display decimal, letters and so on;
Can display the measuring distance by the ultrasonic range module;
8 class adjustable brightness
Color:Blue + Black.
Material:PCB + plastic.

Specification:
Application:Measure the distance and display.
English Manual / Spec :Yes.
Packing List:
1 x Ultrasonic range sensor module.
1 x 4-Digit display module.

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