eBay

100% Brand new and high quality.
Shape: Same as the picture show
Module main technical parameters:
1.Working Voltage : 5V(DC)
2.Static current: Less than 2mA.
3.Output signal: Electric frequency signal, High Level 5V, Low Level 0V.
4.Input trigger Signal: 10us TTL impulse
5.Echo Signal : output TTL PWL Signal
6. Trigger Pulse Input
7. Echo Pulse Output
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.
Note : the module should be inserted in the circuit before been power, which avoid producing high level of misoperation;if not, then power again.
Module Working Principle:
1.Adopt IO trigger through supplying at least 10us sequence of high level signal.
2.The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal.
3.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. Test distance = (high level time * sound velocity (340M/S) / 2.

Note : This module is not suitable to connect with electric power, if you need to connect this module with electronic power,then let the GND terminal of this module to be connected first,otherwise, it will Affect the Normal work of the Module

Please select the quantity you want:
1 x HC-SR04 Ultrasonic Module
5 x HC-SR04 Ultrasonic Module

Note: We only provide the hardware,If you need software, Please search on Google.
(We have a lot of Stocks,if you need more, please contact us.)

Refund
Shipping
Payment
Feedback

Refund

If you can't receive the product within 2 months (60 days), please contact with us,we promise to payback 100% of your money.
We ensure our products work normally before post.If the products is broken before arrival to you,all you should do is taking a photo to show us our broken product.We promise to payback 100% of your money.
If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.
If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.

Shipping

1. We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2. Orders will be processed instantly and dispatched within 1-3 business days except hoilday, so we do NOT accept any email/message note after you place orders.

Payment

EBAY Managed Payment. But we only Accept your Ebay Address, please Make sure it's 100% right.
Payment must be received in 5 business days of auction closing.
Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.

Feedback

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* If you have got the package, please confirm "Delivery on time" For us.

* If a problem occurs, contact us immediately with any email request.

* Just contact us using the " Ask the seller a question" link on eBay.