A-1 Form A,C-1 Form C. Ag Alloy. 1AAVAC/24VDC 10A VAC. 1CA VC/24VDC,10A/ 6A VAC. TV VAC/24VDC. 15A. 1,VA,W. S. Coil Voltage. DC5V. -. -. Coil Sensitivity: Blank – Standard (mW) Important Notice: This data sheet and its contents (the “Information”) belong to the. HKE HRS4H-S-DC5V datasheet, Relay (1-page), HRS4H-S-DC5V datasheet, HRS4H-S-DC5V pdf, HRS4H-S-DC5V datasheet pdf, HRS4H-S-DC5V pinouts.

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It may be that you are connecting it to the power supply ground that also connects to the Arduino, but in that case you are, in fact, electrically connecting it to the Arduino. Olin Lathrop k 30 If you don’t have somebody local to you to help you through this project, you are better off with the pre-manufactured module. To find out which is which, use a ohmmeter. Jun 1 ’15 at So the module as a whole has 10 pins.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms dataheet serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Your Arduino most likely can’t drive that relay directly. Skip to main content. As such, there is often a larger physical distance between these two sets of pins.


Here’s your relay’s datasheet: Interface SD Card with Arduino. Flip the relay over and look at what is printed on the top. Sign up using Facebook. The VCC input provides power for the drivers and the relay coils.

That module you saw probably has at the very least a transistor included to actually drive the relay. What is Web Browser. The resistance between datashedt of these pins and any of the other three will be infinite.

Sign up or log in Sign up using Google. The relays dcv5 the link you provided do not have a Vcc connection, and they have only 5 pins. This high-density System-in-Package SiP integrates controller, power switches, and support components. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Relay is an electromagnetic device which is used to isolate two circuits electrically and connect them magnetically. Commonly used relays are available in different configuration of operating voltages like 6V, 9V, 12V, 24V etc.

If you don’t have an Arduino, you obviously don’t have an Arduino pin 7 to drive the relay. This will often tell you the voltage or current the coil requires to activate the switch, and what the switch is rated for. And I have no idea why your module can run without connecting ground. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. You should not attempt to drive the relay directly from a microcontroller output pin, as they can’t provide enough current – datasheeet would use a micro output pin to control a yrs4h, which in turn would drive the relay.


A datwsheet low side NPN switch is usually the easiest way to control a relay from a digital output. Interface GPS with Arduino. This voltage is called the ss voltage.

Relay Switch Pin Diagram & Description

I have googled with first result as a part’s datasheet with exact pinout. Home Questions Tags Users Unanswered. Do you have a part number? These ICs are driver chips, and they are what actually drive the relays. Get inner details about structure of a relay switch.

There are many questions here already on that topic, so no need to repeat the details in this answer. The input section has a coil which generates magnetic field when a small voltage from an electronic circuit is applied to it.

Wolfe Jun 1 ’15 at You are probably better off purchasing a ready-made module that has the appropriate hfs4h transistor and back-EMF diode already installed.

By using proper combination of contactors, the electrical circuit can be switched on and off. Post as a guest Name. In a basic relay there are three contactors: