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To see product details, add this item to your cart.
FREE Returns
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Ships from: Amazon Sold by: SainSmart Official
SainSmart 8-Channel Relay Module
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Current Rating | 10 Amps |
Brand | SainSmart |
Operation Mode | Automatic |
Coil Voltage | 5 Volts |
Maximum Switching Current | 10 Amps |
About this item
- 5V 8-Channel Relay interface board, and each one needs 15-20mA Driver Current
- Equipped with high-current relay, AC250V 10A ; DC30V 11A
- Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP432, TTL logic)
- Indication LED's for Relay output status
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This Item SainSmart 8-Channel Relay Module | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -15% $10.99$10.99 List: $12.99 | $11.49$11.49 | $15.99$15.99 | $11.97$11.97 | $7.39$7.39 | $7.39$7.39 |
Delivery | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 | Get it as soon as Sunday, Mar 24 |
Customer Ratings | ||||||
Value for money | 4.6 | — | 4.5 | 4.8 | 4.4 | 4.4 |
Easy to use | 4.4 | — | 4.6 | 4.7 | 4.5 | 4.7 |
Sold By | SainSmart Official | HiLetgo | Hua Yao | VOGURTIME | HiLetgo | HiLetgo |
contact type | — | Normally Open | — | Normally Open | Normally Open | Normally Open, Normally Closed |
max switch current | 10 amps | 10 amps | 10 amps | 10 amps | 10 amps | 10 amps |
30 volts | 24 volts | 5 volts | 250 volts | 250 volts | 250 volts | |
— | — | — | — | — | — | |
— | — | — | — | — | — | |
coil voltage | 5 volts | 24 volts | 5 volts | 5 volts | 5 volts | 12 volts |
operation mode | Automatic | Automatic | Automatic | Automatic | Automatic | Automatic |
Product Description
This is a 5V 8-Channel Relay interface board Be able to control various appliances and other equipments with large current It can be controlled directly by Microcontroller(Arduino 8051 AVR PIC DSP ARM ARM MSP430 TTL logic)
From the manufacturer
SainSmart 8-Channel 5V Relay Module
Package Content:
- 1 x SainSmart 8-Channel 5V Relay Module
More Manual instruction please refer to our site.
SainSmart 8-Channel Relay Module
- 5V 8-Channel Relay interface board, and each one needs 15-20mA Driver Current.
- Equiped with high-current relay, AC250V 10A ; DC30V 10A .
- Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .
- Indication LED’s for Relay output status.
Fetures:
A Relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate the switch and provide electrical isolation between two circuits.
- This 8 channel 5V relay has both optical and magnetic isolation, providing a lot of protection to the inputs from electrical faults on the outputs.
- Works well with both 3.3V and 5V logic (Raspberry Pi, Arduino, Teensy..), requiring little current drive.
- Breadboard friendly, using female/male dupont makes it extremely convenient for prototyping.
- LED indicates its working status. Red refers to errors.
- 3 terminals per SPDT relay.
All of these features make SainSmart relay a great component for automation projects.
Item weight: 0.3 pounds.
Product information
Current Rating | 10 Amps |
---|---|
Brand | SainSmart |
Operation Mode | Automatic |
Coil Voltage | 5 Volts |
Maximum Switching Current | 10 Amps |
Maximum Switching Voltage | 30 Volts |
Product Dimensions | 7 x 6.4 x 1 inches |
Item Weight | 4.2 ounces |
ASIN | B0057OC5WK |
Item model number | 101-70-102 |
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #584,674 in Automotive (See Top 100 in Automotive) #173 in Automotive Replacement Relay Control Module Relays |
Is Discontinued By Manufacturer | No |
Other display features | Wireless |
Whats in the box | 1x SainSmart 8-Channel Relay Module |
Manufacturer | SainStore Inc. |
Date First Available | June 23, 2011 |
Warranty & Support
Feedback
From the brand
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How did we get our start?
SainSmart has served the maker community for years. As time went on and the maker movement continued to grow so did our product selection, we continue to provide quality products with great value and performance to our customers.
What makes our products unique?
With our superior quality control and a variety of open hardware supplies, we believe we can provide you with a better shopping experience and guide you through your Maker Journey.
Why do we love what we do?
Ten years of DIY/Maker-centric products has been a great journey! We are glad to play a part in this voyage, bringing value and performance to our customers and “unleash creativity” helping turn their daydreams and weekend projects into reality.
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works great! I used it on my PI with a GUI code.
Pam Ewing
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, quality and ease of use of the relay. They mention that it works well, is well made and easy to work with. Some appreciate the appearance and value of the product. That said, some complain about the noise it makes when in use.
AI-generated from the text of customer reviews
Customers like the performance of the relay. They mention that it works well, the LED's in the circuit act as displays, and it works great even in below freezing conditions. They say it works with Python programming language, 3.3V and 5V logic, and is a useful device.
"...the 4 relay model and the LEDs are bigger, but these are smaller and work great.- LED's in the circuit act as diodes...." Read more
"...It's such a useful device, and easy to use once you understand it, that you'll be glad you bought one." Read more
"...The product is very solid, assembled well, and works exactly as advertised...." Read more
"...They work well with 3.3V and 5V logic (RasPi, Teensy, Arduino, ...), requiring little current drive...." Read more
Customers like the quality of the relay board. They say it's a good piece of electronic hardware, well-made, and reliable. Some customers also mention that the board workmanship appears to be good. Overall, customers are satisfied with the quality and functionality of the board.
"This is useful to have around, because there's nearly always something you'd like to turn on, or something you'd like to disconnect...." Read more
"...Based on my experience so far, I'd say it is a perfect device for home automation projects." Read more
"These are great little relay boards that I'm using to automate a paludarium I put together...." Read more
"Works perfectly, even after some water falled in the circuit. Very robust and stable." Read more
Customers find the relay easy to use. They mention it's a great module, easy to wire, and smooth control with NI DAQ TTL. Customers also say that the schematics and docs are readily available. They say the relay is great for their Beaglebone or Raspberry Pi projects.
"...It's such a useful device, and easy to use once you understand it, that you'll be glad you bought one." Read more
"...for a Xmas light display (run of an Arduino) and while they are easy to hook up..." Read more
"...The product isextremely easy to integrate and use with the Arduino. The price is alsoreasonable, which makes it a great fit...." Read more
"...As most say, the documentation is limited, but enough information is on-line that it is fairly easy to get them running...." Read more
Customers appreciate the value of the relay. They say it is a great value.
"These are wonderful and a great value...." Read more
"...They are cheap enough so it might be worth getting more than one if your project is an important one...." Read more
"...I thought, 8 objects, 8 relays, good price, so why not? What I didn't realize is that the inputs are not actually inputs...." Read more
"...Good product, Great price" Read more
Customers like the appearance of the relay. They say it looks good, they did a great job designing and creating it, and it's a pleasure just to look at. The layout is very nice and organized better than other relay modules they've seen. There are indicating LEDs and a nice set of solenoids.
"...figured out what I want to do with this in the long run but it is very cool and I can see a lot of potential in it...." Read more
"...So THANKS A LOT other reviewers! The layout is very nice and organized better than other relay modules I've purchased at hackerspaces...." Read more
"...Looked exactly as the image provided. My board had little red leds to indicate the relay was on. Didn't expect it and it was very useful." Read more
"Nice product, good value to add more capability to Arduino and interface it with real world items...." Read more
Customers are satisfied with the speed of the relay. For example, they mention that it works as advertised, has a quick switch-over time, and has slowed bounce.
"...The contacts have fairly low bounce and quick switch-over time...." Read more
"...The relays are very fast too...." Read more
"...of note: For an electromechanical (not solid state) relay, this is very fast...." Read more
"Spot on delivery and great quality. using it for my Arduino project and it runs both 120v ac and 12v dc." Read more
Customers find the product easy to play with. They mention that it is not a toy, but really fun to play.
"...Lot's of fun - you should buy one!CONS:- N/AOTHER:-..." Read more
"This made Raspberry Pi projects a whole lot easier and more fun...." Read more
"...function to change if it negates or relays the input, makes this easy to play with." Read more
"Not A Toy, But Really Fun To Play With!..." Read more
Customers are not happy with the noise produced by the relay. They mention that it clicks audibly during a light show and that it's loud when working with lower voltage.
"...Not a fault of the product, but they are very noisy, so for the "Christmas lights to music" purpose I had to place it in a box with sound proofing..." Read more
"...This relay is kinda loud, so if you are working with lower voltage applications, I would suggest going with the solid state version...." Read more
"...Note that because it's a mechanical relay, it's not exactly quiet...." Read more
"...During a light show they click audibly, but outside in a controller box it shouldnt be too much of a problem." Read more
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SETUP:
- Connect arduino powersupply 5v to VCC
- Connect arduino Digital ground to ground
- Connect arduino digital output to any IN1-IN8
- You're in business!
CURRENT:
I connected my meter in series and found I was drawing 64mA across the Arduino 5v power supply and 1.9mA across the Arduino output pin.
I flipped it over and measured 7100ohms across the coil, meaning the coil is drawing 0.7mA at 5v.
These numbers honestly seem a little low to me - e.g. I expected more like 19mA across the output, but 64mA across the power supply seems very reasonable with all eight relays drawing 400mA per the spec.
Note: Arduino max power supply voltage is 500mA on USB, so you're good there too.
PROS:
- This won't blow up your Arduino.
- I didn't realize this model had LEDs. I looked at the 4 relay model and the LEDs are bigger, but these are smaller and work great.
- LED's in the circuit act as diodes. My dad told me when the field collapses on a DC coil it generates a negative voltage. If you don't have a diode in the way you could burn up your output transistor.
- This has NC (Normal Closed) and NO (Normal Open) contacts on the high voltage side. So if you want your lights ON or OFF by default you can do that. It has a nice diagram on the board showing how the high voltage contacts are laid out.
- Price
- 4 mounting holes on the board if you need to bolt it to something!
- Lot's of fun - you should buy one!
CONS:
- N/A
OTHER:
- The header PINs are really nice, but I only have male breadboard jumpers and need to buy some male-female jumpers from radio shack before I can hook this baby up to my xMas light setup!!
The board is a bit counter-intuitive, where the NO connection is closed when you send a LOW signal. You need to send 5v not only to the header with the control pins, but also to the pins on the right side. I highly recommend you wire it up and test your control logic PRIOR to actually hooking up anything on the high-energy side, then test whether you've got it right with your multimeter. Also, you'll find that a USB-powered Arduino's 5v is enough to energize the LED's for a relay, but that's NOT enough to actually energize the relay -- if you don't hear a click, then you haven't successfully engaged the relay. Once again, good reason to test your theories with a multimeter. It's such a useful device, and easy to use once you understand it, that you'll be glad you bought one.
Not a fault of the product, but they are very noisy, so for the "Christmas lights to music" purpose I had to place it in a box with sound proofing material. Most relays click when they switch, so when you have 8 of them banging away to music it's pretty loud. My conclusion is that using them for this purpose will wear out the relays pretty soon. If you're looking for relays for rapid switching, I'd suggest the solid state version, although they are lower power rating. My lights are 120 volt so I went mechanical.
The product is very solid, assembled well, and works exactly as advertised. I'll probably re-purpose the product for controlling other high voltage items in the house. Based on my experience so far, I'd say it is a perfect device for home automation projects.
They have indicator LEDs that can save you hours of problem-determination time, aid classroom demonstrations and reassure you things are working as expected. They're red, so someone might confuse them with error LEDs. The contacts have fairly low bounce and quick switch-over time.
They have 3 terminals per SPDT relay, but they are soldered to the board, not on a connector. This is the only drawback I can find with this product. If you twist too hard, you can ruin the terminal. Fortunately it's a common header and easy to resolder.
I ended up needing another one, so I bought another.
It never showed up even after being marked as delivered, so I contacted Amazon. Because they saw that tracking showed it as delivered, they denied my refund.
Hope they like chargebacks!
Top reviews from other countries
耐久性はまだわかりませんがArduinoで多点のドライ接点が欲しい時にとても重宝します。
Reviewed in Mexico on November 4, 2018