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The Best Esp8266 Relay Board of 2023 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Esp8266 Relay Board of 2023. Check our ranking below.
2,680 Reviews Scanned
- Based on ESP-01S module.
- This module uses ESP-01S as the main control and is remotely controlled by mobile phone APP for smart home or IOT projects.
- With this smart relay, you can easy to DIY your smart switch and control any device through your phone anywhere.
- Light weight, compact size and very easy to install in a small case.
- Package Includes: 5Set ESP8266 Transceiver + Relay Switch Board
- This module uses genuine relays and normally open interfaces. High stability and low power consumption.
- Strong driving ability, stable and reliable performance. High efficiency, fine workmanship, and durable.
- Add one more ESP-01S module. This smart relay module is based on the ESP-01S WIFI module design. It can be used to DIY your own smart switch. It can be remotely controlled by the mobile phone APP and provides APP and LUA source programs. It's easy to use right away.
- The package includes：2 pcs ESP8266 ESP-01S Relay module, relay WIFI smart socket (with ESP-01S)
- We are very grateful for all customers’ opinions to improve sales, if you are not satisfied, please contact us to find the best solution
- 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)
- Onboard High Performance Microprocessor and ESP-01 WIFI Module
- The module has two working modes: mode 1: the mobile phone is directly mounted on the WIFI module; Mode 2: The mobile phone and the WIFI module are mounted on the router at the same time (additional function: it can also be used as a USB relay when the ESP-01 is unplugged)
- Transmission distance: (1) In open environment, the maximum stable transmission distance when the mobile phone is mounted on the WIFI module is 100m;(2) When the WIFI module and the mobile phone are mounted on the router at the same time, the transmission distance depends on the signal strength of the router.
- Onboard 5V,10A/250V AC 10A/30V DC relay, can be continuously drawn in 100,000 times, with diode laxative protection, short response time
- Onboard mode selection and real-time working status indicator; with 4 optocoupler isolation, strong anti-interference ability; reserved UART debugging interface and MCU program download interface
- On-board mature and stable ESP-12F WiFi module with large capacity of 4M Byte Flash
- The I/O port of WiFi module and UART program download port are all led out, which is convenient for secondary development
- Support DC8-80V/USB5V/pin port power supply, RST reset key of onboard WiFi module
- Onboard 1 5V relay, output switch signal, suitable for controlling and controlling loads with working voltage within AC 250V/DC30V
- Onboard power indicator, 1 programmable LED and relay indicator
Last update on 2025-07-07 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What is the output pin of the ESP8266 relay module?
A: The following list shows the 5V output pins of different ESP8266 microcontroller boards: To control the relay module we can use a 3.3V digital pin of the ESP8266. The following pictures show the wiring between the ESP8266 board and the relay module.
Q: Can you control 4 channels with an ESP8266?
A: It is fairly easy to turn that into a WiFi controlled 4 channel relay with an ESP8266. Sure, a Lolin or Wemos board will do, but as we only need to control 4 channels, the simple ESP8266-01 suffices. Both the ESP8266-01 and the relay board have their peculiarities, that in this case complement eachother.
Q: Which is the VIN pin for the ESP8266?
A: Both can be used with the ESP8266 – you can either use the Vin pin (that provides 5V) or the 3.3V pin. Additionally, some come with built-in optocoupler that add an extra “layer” of protection, optically isolating the ESP8266 from the relay circuit. For demonstration purposes, let’s take a look at the pinout of a 2-channel relay module.
Q: What kind of pin do I need to control the relay module?
A: To control the relay module we can use a 3.3V digital pin of the ESP8266. The following pictures show the wiring between the ESP8266 board and the relay module. The following picture shows the wiring between the ESP32 ESP-WROOM-32 board and the relay module.