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Small green circuit board with black relay and silver ESP-01S module

SMUGDESK

SMUGDESK ESP8266 WiFi Relay Switch Module with ESP-01S

SKU CH-W4H1-XMPVH

Wireless relay module with ESP8266 chip enables remote on/off control for DIY smart home projects

  • Wireless remote control via ESP8266 WiFi chip
  • DIY smart socket with relay output design
  • Custom logic, timing and sensor linkage support
  • Stable WiFi communication for home automation projects
  • Compact module controls lights, pumps and fans

Smart Home Relay Module

This ESP8266 WiFi relay switch module integrates an ESP-01S wireless chip to give makers and hobbyists remote on-off control over low-power mains loads. It is aimed at DIY enthusiasts building custom smart sockets, greenhouse automation or student electronics projects who are comfortable writing their own firmware.

Thermal and Power Behaviour

The compact board runs cool during normal switching of lights, small pumps or fans because the relay only draws current while actuating. No active cooling is required and the module adds negligible load to the USB or 5 V supply that powers the ESP-01S.

Programmable Firmware Advantage

The open circuit design lets you flash custom logic for timing schedules, sensor-triggered actions or home-assistant integration without proprietary cloud lock-in. Bundled example code accelerates development but full remote control still requires basic programming skill.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 93% of the 1,517 comparable items (median $68.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the ESP8266 WiFi relay module and what step often causes problems?

Wire the load to the relay contacts, supply power to the board, then flash the ESP-01S with your firmware before joining it to the network; skipping the flash step leaves the module unresponsive.

What maintenance or replacement will this relay module need over time?

The mechanical relay contacts wear with each switching cycle, so plan to replace the entire module once the contact rating is exceeded or the relay fails to latch.

What limit appears first when the module runs continuously under load?

The relay’s rated load capacity is the first constraint; exceeding it causes contact burnout and permanent failure of the switching function.

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