--- product_id: 44238856 title: "ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System" brand: "hiletgo" price: "£9.79" currency: GBP in_stock: true reviews_count: 5 url: https://www.desertcart.co.uk/products/44238856-esp8266-5v-wifi-relay-module-toi-app-control-for-smart store_origin: GB region: United Kingdom --- # APP Control ESP8266 WiFi Module 5V, 10A Relay ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System **Brand:** hiletgo **Price:** £9.79 **Availability:** ✅ In Stock ## Summary > 🔗 Connect, Control, Conquer! ## Quick Answers - **What is this?** ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System by hiletgo - **How much does it cost?** £9.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/44238856-esp8266-5v-wifi-relay-module-toi-app-control-for-smart) ## Best For - hiletgo enthusiasts ## Why This Product - Trusted hiletgo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly Setup:** Quickly integrate into your existing WiFi network with minimal hassle. - • **Powerful Connectivity:** Connect up to 5 clients simultaneously for a truly smart experience. - • **Future-Proof Your Home:** Elevate your home automation game with cutting-edge technology. - • **Seamless Smart Control:** Easily manage your home devices from anywhere with the intuitive app. - • **Robust Relay Performance:** Handles up to 10A for AC and DC, ensuring reliable operation. ## Overview The HiLetgo ESP8266 5V WiFi Relay Module is a versatile smart home automation tool that allows users to control devices remotely via a mobile app. Featuring a robust 10A relay and the ability to connect multiple clients, this module is designed for seamless integration into your smart home ecosystem. ## Description HiLetgo ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System ## Features - Onboard Module:ESP8266 WIFI Module - Onboard Relay:5V,10A/250V AC 10A/30V DC relay - Function: Mobile phone and wifi module equipped with one router,and control the relay by APP - Advantage: Can connect 5 client at the same time on the mode of AP - Working Method:Mobile phone equipped with Wifi module ## Product Details - **Connector Type:** Through Hole - **Contact Material:** Silver - **Contact Type:** Normally Open - **Current Rating:** 10 Amps - **Mounting Type:** PCB Mount ## Images ![ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System - Image 1](https://m.media-amazon.com/images/I/614RIuhgSmL.jpg) ## Questions & Answers **Q: Is there any documentation on how to interface with this?** A: https://www.hackster.io/makerrelay/esp8266-wifi-5v-1-channel-relay-delay-module-iot-smart-home-e8a437 Hope this helps you. take care. **Q: I need a device, that when commanded, will send an electrical signal twice in a row. I want to wire it to a remote start which requires two button pu?** A: If this button you need to control is a normally open pushbutton, you would wire the normally open relay contacts across the terminals of that pushbutton, and when you activate the relay you'll get one "press" of the button. You would then write code equivalent to: activate, delay, deactivate, delay, delay, activate, delay, deactivate. which would give you your two button presses. Experiment a little bit on how much delay is required, start with each occurrence of the word "delay" above being a 200ms delay. **Q: Can i use this as a switch with 12v 1amp like sonoff sv** A: The board requires 5 volts to operate, That said the contacts will switch 12 volts 1 amp. **Q: All I need is a WiFi relay that alerts me when a float switch closes is there such a thing?** A: This device is a relay controller, meaning it has an "output" signal. You need a device with an "input" signal. There are lots of other ESP8266 boards out there with "input" signals on board, and which could be programmed to do what you want. You can buy those for about five bucks apiece, plus power. You could run these off a USB cable with an AC/USB adapter "wall wart". ## Customer Reviews ### ⭐⭐⭐⭐⭐ Open door garage *by L***Z on June 25, 2025* Excelente para uso en open door garage en la frequency 2.4Ghz atravez de una aplicación de Google play... Attention esta aplicación de Google es poco comfiable dado que contiene publicidad y quizás sea usada para fishing de tus datos personales tenlo siempre presente. ### ⭐⭐⭐ Not impressed *by P***N on December 29, 2020* As other reviews indicate, the chinglish documentation is rather awful. My use-case for this unit was with my own code on the ESP8266-01 controlling a relay. I liked the form-factor indicated and really didn't need much documentation; the price point was ok so I took a chance. Note if you go to the web-site indicated on the unit, not only do you get a Chinese only insecure web-site (slow when accessed from the US) but all the information/writing is in images (perhaps scrabed from other sites?). Using my camera to translate, and it more or less sounds exactly the text that's hard to understand on Amazon (and the link someone kindly linked to create.arduino.io). In other words, it looks like purposely very little information about this unit. The contact information on the web-site doesn't match the website domain - a lot of warning signs about trust and reliability.And it looks like the unit is single purposed even though it's based on an ESP8266 that every maker out there know how to program.I probably will end just grabbing the relay and perhaps the regulator from this board and trashing the rest. Note, I really appreciate that the unit comes with a pre-programmed ESP8266-01 but that code is as insecure as it gets. It's a no-go. There's no option to just power it up and configure it via a phone, and you have simple commands, no state no nothing, so this really is just a toy. For that, it's fine. But doesn't fit my use-case.First big problem - there's no way to pull D0 to ground to allow for programming! My unit has 3 "extra" pins where one claims to be RST (doesn't reset when pulled low). Really would have been better with a push-button for that. And if it's supposed to be FTDI compatible (not without pulling D0 to GND it won't be) that RST should be connected to RTS to allow it to reset the unit correctly after programming. So bottom line, you need to program your unit "else-where". And if that's the case, I can test the unit "else-where" and there's no need for FTDI pins at all. Or better, add a usb interface on the empty underside and avoid people struggling with voltages.As other reviewers have pointed out, there's a second micro-processor (N76E003) on the board which makes little sense given the application. We're talking about a single "on/off" output and the ESP8266 comes with two pins that works just fine in the standard setup. Heck, they have to use one of them to communicate with the other microprocessor! The reasons a second processor is there can only be cause of undocumented features which disqualify the unit.I really like the 3.3v of the ESP8266 so the 5v requirement pushes me the wrong way here. I need to provide 5v to just have it regulated down and at the same time it's not clear if the FTDI lines should follow the ESP8266 3.3v or 5v? I see no mosfet translation of the voltages, so that probably explains why mine is running relatively hot on this unit. The board says 5v on the VCC so you would asume the TX/RX would be 5v too (and if you set your FTDI to 3.3v it's VCC line is 3.3v too!). This would really have been so much simpler if they just used a 3.3v triggered relay instead.To do this on my own all I need is add my own 110v->3.3v regulator, get a proper 3.3v triggered relay and I should use less power and gain full control of programming, setting up OTA and ensure SSL is implemented communicating with the unit. It means I can have the state recorded in NVRAM so if power goes out, the unit can come back to the same state it was before the power went out (or use a latching relay).Perhaps using this board as an inspiration for a compact layout would be the biggest value from this unit. Not sure yet.So if you just want to write serial commands and see a relay being controlled, this is a nice small board for it. But you can do this very simply with a breadboard and a relay already (just use a 3.3v relay). Add a protection diode to avoid feedback from the coil, and you're golden. D0 or D2 then connects directly to the coil, or if you're the careful kind through a simple NPN transistor/mosfet. And now you're in charge of what causes the signal to be turned on/off. ### ⭐⭐⭐⭐ I like it now that I can control the relay. *by J***B on September 10, 2019* I did not like that it was not a simple GPIO output to control the relay from the ESP01. The ESP must be running the AT command firmware.OK, but not good for me. I need a blank ESP01. This relay has a second MCU to control the relay, It is listening on the ESP01 TX/RX.Here is the code to open and close the relay.#include "Arduino.h"byte RlyOpen[] = {0xA0, 0x01, 0x00, 0xA1};byte RlyClose[] = {0xA0, 0x01, 0x01, 0xA2};void setup() {Serial.begin(9600);}void loop() {//Open the RelaySerial.write("+IPD,0,4:");Serial.write(RlyOpen, sizeof(RlyOpen));Serial.println("");delay(5000);//Close the RelaySerial.write("+IPD,0,4:");Serial.write(RlyClose, sizeof(RlyClose));Serial.println("");delay(5000);} ## Frequently Bought Together - HiLetgo ESP8266 5V WiFi Relay Module TOI APP Control for Smart Home Automation System - Ewelink WiFi Wireless Smart Relay Module USB 5v/12v/24v/48v Inching Selflock Remote ON Off Power Switch for Access Control,Turn on PC, Compatible with Alexa Google Home - MHCOZY WiFi Wireless Smart Switch Relay Module for Smart Home 5V 5V/12V，Ba Applied to Access Control, Turn on PC, Garage Door (5v) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/44238856-esp8266-5v-wifi-relay-module-toi-app-control-for-smart](https://www.desertcart.co.uk/products/44238856-esp8266-5v-wifi-relay-module-toi-app-control-for-smart) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*