Description
ESP8266 ESP-01 5Volt WiFi Relay Module (1CH / 2CH / 4CH)
The ESP8266 ESP-01 5V WiFi Relay Module is a versatile and compact module designed for wireless control of electrical devices through Wi-Fi. With support for 1, 2, or 4 relay channels, this module is ideal for smart home automation, IoT projects, and remote device control.
Using the powerful ESP8266 Wi-Fi SoC, this module allows users to control lights, fans, motors, and other appliances remotely through a smartphone or local network connection. It supports multiple communication modes, including TCP/UDP via serial AT commands, and integrates seamlessly with microcontrollers like Arduino, NodeMCU, and Raspberry Pi.
Features
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Available in 1CH, 2CH, and 4CH Variants for flexible control
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Wi-Fi Control via ESP8266 ESP-01 Module
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Supports AP, STA, and AP+STA Modes
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5V Logic Compatible, easily interfaces with Arduino and other microcontrollers
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High-quality SRD-05VDC-SL-C Relays for stable operation
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Optocoupler Isolation ensures safe and reliable signal control
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Compact design for easy integration in DIY and professional setups
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Supports custom firmware for advanced automation and IoT applications
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ESP8266 ESP-01 WiFi Relay Module |
| Available Variants | 1-Channel, 2-Channel, 4-Channel |
| Operating Voltage | 5V DC |
| Relay Type | SRD-05VDC-SL-C |
| Communication Interface | Wi-Fi (802.11 b/g/n) |
| Microcontroller | ESP8266 (ESP-01) |
| Control Mode | Wi-Fi (TCP/UDP) / AT Commands |
| Logic Level | 3.3V / 5V Compatible |
| Maximum Load | 10A @ 250V AC or 10A @ 30V DC |
| Isolation | Optocoupler for safe signal separation |
| Operating Temperature | -20°C to +70°C |
| Wi-Fi Mode | AP / STA / AP+STA |
| Dimensions (approx.) | Varies by channel count (1CH ~46mm, 4CH ~82mm) |
Applications
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Smart home automation
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IoT device control
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Remote relay switching
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DIY Wi-Fi-controlled appliances
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Lighting, fan, and motor automation
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Wireless control for industrial systems