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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Get inner details about structure of a relay switch. This voltage is called the operating voltage. Relays are sometimes used for their electrical isolation between their input the coil and their output the switch contacts. Commonly used relays are available in different configuration of operating voltages like 6V, 9V, 12V, 24V etc. Olin Lathrop k 30 Your relay has 5 pins, which are almost certainly the datashheet connections to the coil, and the common Adtasheetnormally-open NOand datashset NC connections of the switch.

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This guess is based on the fact that there are two of them grouped separately from the others. You are probably better off purchasing a ready-made module that has the appropriate driver transistor and back-EMF diode already installed. Your Arduino most likely can’t drive that relay directly. There are many questions here already on that topic, so no need to repeat the details in this answer.


Sign up using Facebook. The resistance between each of these pins and any of the other three will be infinite. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Guessing from the layout of the pins shown in your picture, the coil pins are the two at right.

Home Questions Tags Users Unanswered. And I have no idea why your module can run without connecting ground. You have made an understandable mistake.

Post as a guest Name. The output section consists of contactors which connect or disconnect mechanically.

HRS4H-S-DC5V Datasheet PDF

Skip to main content. These ICs are driver daatsheet, and they are what actually drive the relays. You aren’t going to be able to drive this relay directly from the digital output of a microcontroller. Choosing Battery for Robots. Sign up or log in Sign up using Google.

By using proper combination of contactors, the electrical circuit can be switched on and off. Wolfe Jun 1 ’15 at The NO pin will have infinite reistance to all other pins.

Interface SD Card with Arduino. They are often used to interface an electronic circuit working at a low voltage to an electrical circuit which works at very high voltage. What is Web Browser. Vatasheet module you saw probably has at the very least a transistor included to actually drive the relay.

All you have there is a base relay. As such, there is often a larger physical distance between these two sets of pins. Sign up using Email and Password.


Relay is an electromagnetic device which is used to isolate two circuits electrically and connect them magnetically. A simple low side NPN switch is usually the easiest way to control a relay from a digital output.

To find out which is which, use satasheet ohmmeter. I have googled with first result as a part’s datasheet with exact pinout. Email Required, but never shown. WhatRoughBeast 49k 2 28 The VCC input provides power for the drivers and the relay coils. If you don’t have an Arduino, you obviously don’t have an Arduino pin 7 to drive the relay.

The input section has a coil which generates magnetic field when a small voltage from an electronic circuit is applied to it. Flip hs4h relay over and look at what is printed on the top.

That instructable is using a program in the Arduino to control the relay by setting the Arduino’s pin 7 high or low.

Relay Switch Pin Diagram & Description

Choosing Motor For Robots. In a basic relay there are three contactors: What is the problem? They are very useful devices and allow one circuit to switch another one while they are completely separate. What you have in your picture is a plain old relay.