Connector Type | Screw |
---|---|
Contact Type | Normally Open, Normally Closed |
Current Rating | 10 Amps |
Mounting Type | Screw Mount |
Brand | HiLetgo |
Operation Mode | Automatic |
Wattage | 6E+1 |
Coil Voltage | 12 Volts |
Contact Current Rating | 10 Amps |
Maximum Switching Current | 10 Amps |
Maximum Switching Voltage | 250 Volts |
UPC | 702082656006 |
Manufacturer | HiLetgo |
Item Weight | 1.76 ounces |
Package Dimensions | 7.13 x 2.56 x 1.06 inches |
Item model number | 3-01-0348 |
Is Discontinued By Manufacturer | No |
Color | Red |
Material Type | other |
Size | Small |
Manufacturer Part Number | 3-01-0348 |

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HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino
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Purchase options and add-ons
Connector Type | Screw |
Contact Type | Normally Open, Normally Closed |
Current Rating | 10 Amps |
Mounting Type | Screw Mount |
Brand | HiLetgo |
About this item
- 12V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger
- The module Operating voltage 12V;
- The module can be high or low by a jumper setting trigger;
- Fault-tolerant design, even if the control line is broken, the relay will not operate;
- The power indicator (green), the relay status indicator (red).
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Price | $11.29$11.29 | $11.49$11.49 | $12.99$12.99 | $13.99$13.99 | $8.99$8.99 | $8.99$8.99 |
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Customer Ratings | ||||||
Sold By | HiLetgo | HiLetgo | Aediko US | Maduohuose | Aediko US | ELEGOO Official US |
contact type | Normally Open, Normally Closed | Normally Open | Electronic | Normally Open, Normally Closed | Normally Closed | Normally Open, Normally Closed |
max switch current | 10 amps | 10 amps | 2 amps | 10 amps | — | 10 amps |
250 volts | 24 volts | 250 volts | 250 volts | 250 volts | 250 volts | |
0 volts of direct current | 24 volts | — | — | — | 30 volts | |
— | — | — | — | — | — | |
coil voltage | 12 volts | 24 volts | 5 volts | 12 volts | 5 volts | 5 volts |
mounting type | Screw Mount | Screw Mount | PCB Mount | Screw Mount | Screw Mount | Screw Mount |
operation mode | Automatic | Automatic | Automatic | Automatic | Off | Automatic |
Product information
Technical Details
Additional Information
ASIN | B00LW2GA5Y |
---|---|
Customer Reviews |
4.5 out of 5 stars |
Date First Available | July 17, 2014 |
Warranty & Support
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HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino
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Product Description
Description :
1. The module uses genuine quality relay, normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A;
2. Using SMD OPTOCOUPLER isolation , driving ability , stable performance ; trigger current 5mA;
3 . The module voltage is 12V;
4 . Each way module can be set high or low triggered by jumper ;
5 . Fault-tolerant design , even if the control line is broken , the relay will not operate ;
6 . The power indicator ( green ) , 8 relay status indicator ( red )
7 . Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient
8 . Module size : 141.5mm * 50mm * 18.5mm ( L * W * H )
9 . Has four mounting bolts holes , hole 3.1mm, pitch 136mm * 44.5mm
Module Interface :
1. DC +: 12V positive power supply
2. DC-: negative power connection
3. IN1-IN8: each way based on the settings , can be high or low to control the corresponding relay
Relay outputs :24 line interface, the interface can be directly connected to all leads , user-friendly
1. NO1 - NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM
2. COM1 - COM8: Relay Common Interface
3. NC1 - NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant
High and low trigger selection :
1.S1-S8 in order to relay a road -8 way high and low trigger selection ;
2.Com with low short circuit , triggering the corresponding relay is low , while the high end of the short com high trigger
Package Included:
1*12V 8 Channel Relay Module With Optocoupler
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 find the relay module works well as a decent option for hobby use and appreciate its reasonable price. The quality receives mixed feedback, with some customers describing it as well-made while others report receiving faulty boards.
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Customers find that the relay module works well and is suitable for hobby use.
"...I have used several of these for various projects, all worked fine, all are reliable. Everything is labeled clearly on the board...." Read more
"...Looks pretty sweet and nerd cool. I’m an automation engineer and this was the cheapest solution I could ever dream of and still works great...." Read more
"...It worked like a charm. See my uploaded video. This is a great product at a reasonable price." Read more
"I used this to control a handicap chair in a van. Works good. Seem to be holding up no problem." Read more
Customers find the relay module to be reasonably priced, with one mentioning it can replace expensive $10 parts.
"...At less than ten bucks, these things are a bargain." Read more
"...I’m an automation engineer and this was the cheapest solution I could ever dream of and still works great...." Read more
"...See my uploaded video. This is a great product at a reasonable price." Read more
"...At least this I can troubleshoot and replace $10 parts..." Read more
Customers have mixed experiences with the relay module's quality, with some finding it well made and reliable, while others report receiving faulty boards.
"...have used several of these for various projects, all worked fine, all are reliable. Everything is labeled clearly on the board...." Read more
"...Discovered that about 30% were defective. Cost to remove and replace. That cost was more then the entire price paid for the project...." Read more
"Well made product... I understand that if your using one of these then your familiar with the wiring...." Read more
"...I tested all channels on this board, none work. Must of gotten a defective board." Read more
Reviews with images

Excellent Products
Top reviews from the United States
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- Reviewed in the United States on September 23, 2020Works as advertised. I have used several of these for various projects, all worked fine, all are reliable. Everything is labeled clearly on the board. It can be triggered by 12v or 5v, there are little jumpers to change this, again, all clearly labeled. The isolation is a nice feature, though not important in any of the applications I need. The screw terminals hold stranded 18 gauge wire very securely (you can even get two in if you are careful.) I really like the LEDs for each relay that light up when the relay is triggered, makes keeping track of things while setting up complex wiring a lot easier.
I can say from experience that these are robust. I accidentally hooked up a few wires incorrectly and shorted 3 of the relays. The plastic on my wires melted before I could unhook from the power supply.... but the board suffered no damage.
Some reviewers complained that there are no directions, but honestly, if you don't know what +, -, NC, NO and com are, and if you don't know how to change jumpers, you need a course in basic electronics: directions aren't going to help you. Everything is labeled, the specs are in the description.
At less than ten bucks, these things are a bargain.
- Reviewed in the United States on June 26, 2024Well made product... I understand that if your using one of these then your familiar with the wiring.
My only suggestion is to have some wiring diagrams for these, other than awesome product.
Well made product... I understand that if your using one of these then your familiar with the wiring.
My only suggestion is to have some wiring diagrams for these, other than awesome product.
Images in this review
- Reviewed in the United States on March 19, 2021I put an array of switches on top of the dash of my jeep but did not have enough room to route big cables to power the lights, etc the switches were meant to control. So I just ran a CAT 6 cable, which cannot carry any current speak of, to the switches and then to this relay board. Then of course powered the relay board with real wire and it worked awesome. I mounted the board on a piece of cheap cutting board I bought from Wally world and mounted it under my steering wheel area in my jeep. Honestly it’s kind of a bragging point to show folks the board with integrated relays and the way I wired it. Looks pretty sweet and nerd cool. I’m an automation engineer and this was the cheapest solution I could ever dream of and still works great. I have an in-line blade fuse holder for each incoming power line and quick connectors on the harness for ease of mounting or removing from the vehicle.
I put an array of switches on top of the dash of my jeep but did not have enough room to route big cables to power the lights, etc the switches were meant to control. So I just ran a CAT 6 cable, which cannot carry any current speak of, to the switches and then to this relay board. Then of course powered the relay board with real wire and it worked awesome. I mounted the board on a piece of cheap cutting board I bought from Wally world and mounted it under my steering wheel area in my jeep. Honestly it’s kind of a bragging point to show folks the board with integrated relays and the way I wired it. Looks pretty sweet and nerd cool. I’m an automation engineer and this was the cheapest solution I could ever dream of and still works great. I have an in-line blade fuse holder for each incoming power line and quick connectors on the harness for ease of mounting or removing from the vehicle.
Images in this review
- Reviewed in the United States on July 18, 2024I bought this relay so I could make my own Wi-Fi connect sprinkler clock. I wasn't about to pay $400 for one. Instead I got a raspberry pi zero wh ($15.00), power supply for pi ($8.00) and this 8 channel relay ($12.00) for a grand total of $35.00. To put it together load up your pi software then download opensprinklerpi (OSPI). There are directions online that you can follow to set it up to use the GPIO pins to trigger the relay. One thing to note as I didn't realize when I bought this relay is you do actually need a 12 volt input to trigger the relay. The pi was not able to do it on the 5volt pin. I thought it was working when I tested it on my table as it cycled thru the program and turned on the red led for each relay block. However when I connected it to the sprinkler power lines, the relays would not click on. That when I realized that I didn't have enough juice to turn them on. Since this board is a knock off it did not have the separate vvc, vcc-??, Gnd just Dc+, Dc-, 1-8 inputs. So I went and found an old wall wart transformed that had an output of 12volts, this one also happened to be 20 watts which is more than enough but ok to use. The way you have to wire it up is take the Dc+ wire from the power supply and connect to the relay boards Dc+ terminal. Then you connect the power supply Dc- wire to the relay boards Dc- terminal and connect a jumper wire from the relay boards Dc- terminal to a negative GPIO pin on the pi. If you had a jumper from the pi 5 volt GPIO pin to the relay boards Dc+ pin you need to remove it. Hope this helps someone. So far so good with it!!
- Reviewed in the United States on March 12, 2025Not sure if just a bad batch but 2/3 purchased boards had dead on arrival relay in position 1.
- Reviewed in the United States on May 6, 2018The media could not be loaded.
I put together a quick and easy Arduino program to cycle through each of the relays to test everything. It worked like a charm. See my uploaded video. This is a great product at a reasonable price.
- Reviewed in the United States on October 14, 2023I used this to control a handicap chair in a van. Works good. Seem to be holding up no problem.
- Reviewed in the United States on January 14, 2024I love that these have screw terminals instead of pins. I don't have to secure the wires to make sure they don't come off. The boards are as advertised. With other vendors I've gotten boards that claimed you could control if the relays were triggered by a high or low signal, but then arrived without that ability. These have it. I've had no problems and the reliability has been great.