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Features
1. Effective measuring distance: 3cm - 400cm
2. Display unit: cm
3. The biggest error: about 1%
4. Working voltage: 5V
5. Test Board size: 24.2x35.1mm
Interface Description
1. VCC, GND: 5V power interface
2. 54mm white socket: 5V power supply interface
3. TX: module serial port to send foot
4. RX: module serial port receive pin
5. NRST, SWIN: reserved STM8 program download port
Instructions for use
1. Measurement distance can be displayed simultaneously through the digital tube and serial port
2. Digital display, directly plug in the ultrasonic module, access 5V power supply
3. Serial port output: plug in the ultrasonic module, the module's VCC, TX, RX, GND are connected to USB to TTL module 5V, RX, TX, GND, serial communication baud rate 9600, the output format: "D: XXX r n ", Where XXX represents the distance, the unit is CM
Precautions
1. Ranging, the measured object area of not less than 0.5 square meters and should be as flat as possible and slightly stronger reflective ability, otherwise it will affect the test results.
2. Effective measuring distance 3cm-400cm, beyond this range may result in data is not allowed or display 000
Package included
1. 1 x Ultrasonic Distance Measurement Control Board
2. 1 x Ultrasonic Module HC-SR04
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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