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3pcs Relay Module for Arduino, ESP32, ESP8266, Raspberry Pi, 1 Channel, 5V, High/Low Level Trigger

4.2 out of 5 stars 32 ratings
$8.99
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Purchase options and add-ons

Connector Type Screw
Contact Material Steel
Contact Type Normally Open and Normally Closed
Current Rating 10 Amps
Mounting Type Surface Mount

About this item

  • Relay supports Normally Open and Normally Closed
  • Relay supports High-level Trigger or Low-Level Trigger selectable by a jumper
  • Relay with Optocoupler Isolation
  • Relay with Terminal Blocks for both Input and Output Interface
  • Relay with two LED Indicators: power (green LED), the relay status (red LED)
› See more product details

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Product details

  • Product Dimensions ‏ : ‎ 1.97 x 1.02 x 0.73 inches; 2.08 ounces
  • Item model number ‏ : ‎ DIY-RELAY-3-5V-1C-LH
  • Date First Available ‏ : ‎ May 23, 2022
  • Manufacturer ‏ : ‎ DIYables
  • ASIN ‏ : ‎ B0B1ZHXXXD
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.2 out of 5 stars 32 ratings

Product Description

This is 3 pieces of 5V 1-channel relay modules that work with Arduino, ESP32, ESP8266, Raspberry Pi, or any 5V or 3.3V microcontroller. A single package includes 3 pieces of relay modules.

SPECIFICATION:
- Normally open and normally closed.
- High-level trigger or low-Level trigger selection by a jumper.
- Optocoupler isolation.
- Terminal blocks for both input and output.
- Two LED indicators: power (green LED), the relay status (red LED).
- Fault-tolerant design, even if the control line is broken, the relay will not operate.
- Operating voltage (power): 5V.
- Trigger voltage: 3.3V to 5V.
- Trigger current: 5mA.
- Maximum load: AC 250V/10A, DC 30V/10A
- Dimension: 50mm x 26mm x 18.5mm (L x W x H).

INPUT INTERFACE:
- DC+ : Connect the positive pole of the 5V power supply.
- DC- : Connected the negative pole of the 5V power supply.
- IN: Signal trigger input (3.3V to 5V, high or low level signal selected via a jumper).

OUTPUT INTERFACE:
- NO: The normally open interface.
- NC: The normally closed interface.
- COM: The common interface for both normally open and normally closed.

High/low level trigger selection jumper:
- If the jumper is placed between COM and L, the relay uses LOW level trigger.
- If the jumper is placed between COM and H, the relay uses HIGH level trigger.

HOW IT WORKS:
High Level Trigger:
- When IN is LOW level signal, the NO does not connect with COM and the NC connects with COM.
- When IN is HIGH level signal, the NO connects with COM and the NC does not connect with COM.
Low Level Trigger:
- When IN is LOW level signal, the NO connects with COM and the NC does not connect with COM.
- When IN is HIGH level signal, the NO does not connect with COM and the NC connects with COM.

TUTORIALS:
-
Tutorials for Arduino, ESP32, ESP8266, and Raspberry Pi can be found on product page by searching: DIYables 5V relay

Customer reviews

4.2 out of 5 stars
32 global ratings

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Normally open circuit failure
1 out of 5 stars
Normally open circuit failure
Using these with a Raspberry Pi Pico to control a 2 Amp E-bike charger on the normally open circuit. After less than 20 cycles, the relay fails to open when the signal voltage is removed from the "IN" pin. When I flick the top of the relay with my finger, I can get the relay to open the circuit and begin functioning as expected. Garbage. Do not buy.
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Top reviews from the United States

  • a guy
    5.0 out of 5 stars Works well
    Reviewed in the United States on January 29, 2023
    Number of Items: 3Verified Purchase
    These supposely contain a flyback diode on the board. However, my Arduino was sometimes resetting after switching the relays off (which control some solenoids). I had to install my own own flyback diode and everything is working well. That might be unique to my situation.
    One person found this helpful
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  • KEVIN L MCROBIE
    5.0 out of 5 stars Quality components
    Reviewed in the United States on July 30, 2023
    Number of Items: 3Verified Purchase
    I used these to create a tally system for Sony camera control units and a Tricaster TC-1. Worked great. Kept me from having to build the entire circuit.
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  • The Reel Deal
    2.0 out of 5 stars Not bad, not long lasting... last one died, day 40.
    Reviewed in the United States on February 17, 2024
    Number of Items: 3Verified Purchase
    Bought 3 about 35 days ago... 2 died and return window closed, so that's sad.

    They work when they work, not sure if repeated use is recommended as I'm using with a blower to clean steps when I pass, so on and off 40+ times a day may be outside the operational ability of these.. just IME 😎

    UPDATE: 2-21-2024 last one died. So, expect at least 40 days of working time (outside the 30 day window to return) if you use them a lot. Might work if you use them like once a day or something, not sure as that's not my application. I'm getting about a week or so, then they lock open powered or not so, that's a bit dangerous and a possible fire issue if you're in an attic or something where it locks open and heats up.

    Just upsets me b/c it's a REAL pain to replace them every few weeks, the relay is NOT in an easily accessible spot, for me ... ugggg. Good luck to any of you though bold enough to try them!
    2 people found this helpful
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  • Felix del Gato
    5.0 out of 5 stars They work
    Reviewed in the United States on August 23, 2023
    Number of Items: 3Verified Purchase
    It's a relay. My source device tells it to switch on or off and.. it does.
    2 people found this helpful
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  • Robert Mossbrooks
    5.0 out of 5 stars No Issues
    Reviewed in the United States on September 15, 2022
    Number of Items: 3Verified Purchase
    Worked as expected.
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  • Joseph Ferralli
    2.0 out of 5 stars 2 worked flawlessly but one failed after 2 mins
    Reviewed in the United States on March 10, 2024
    Number of Items: 3Verified Purchase
    Comes with 3 relays. 1 failed after about 2 mins of testing. Not sure why. The other 2 are still running perfectly after 2 weeks of intermittent testing.
    One person found this helpful
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  • Mike C Gordon
    1.0 out of 5 stars Normally open circuit failure
    Reviewed in the United States on October 22, 2023
    Number of Items: 3Verified Purchase
    Using these with a Raspberry Pi Pico to control a 2 Amp E-bike charger on the normally open circuit. After less than 20 cycles, the relay fails to open when the signal voltage is removed from the "IN" pin. When I flick the top of the relay with my finger, I can get the relay to open the circuit and begin functioning as expected. Garbage. Do not buy.
    Customer image
    Mike C Gordon
    1.0 out of 5 stars
    Normally open circuit failure

    Reviewed in the United States on October 22, 2023
    Using these with a Raspberry Pi Pico to control a 2 Amp E-bike charger on the normally open circuit. After less than 20 cycles, the relay fails to open when the signal voltage is removed from the "IN" pin. When I flick the top of the relay with my finger, I can get the relay to open the circuit and begin functioning as expected. Garbage. Do not buy.
    Images in this review
    Customer image
    6 people found this helpful
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