Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Chipset Model	ESP8266EX
Flash Memory Capacity	1MB (8Mbit)
Input Power Supply	5V DC
GPIO Logic Level	3.3V TTL
WiFi Standard	IEEE 802.11 b/g/n
WiFi Frequency	2.4GHz
Relay Contact Rating	10A 250VAC
Communication Interface	UART / GPIO
Operating Temperature	-40°C to +85°C
Package Contents	1 x ESP8266 Relay Module

5 reviews

Anonymous

Apr 14, 2026

Rating: 5/5

Perfect for Home Automation

Running Tasmota firmware smoothly. Integrated with Home Assistant without any issues. Highly recommended.

Anonymous

Apr 03, 2026

Rating: 5/5

Great for beginners

Easy to program using Arduino IDE. I got it connected to my home WiFi within minutes. Perfect for learning IoT basics.

Anonymous

Mar 16, 2026

Rating: 4/5

Good value

Relay switching is reliable. Just remember to use a logic level converter if connecting to 5V microcontrollers.

Anonymous

Jan 29, 2026

Rating: 4/5

Solid hardware

Works well but documentation is sparse. You need to know your way around GPIO pins to get the best results.

Anonymous

Jan 19, 2026

Rating: 5/5

Compact design

Fits nicely into small junction boxes. The form factor is ideal for retrofitting existing switches.

5 FAQ

Q: What is the standby current?

A: Approximately 70mA in active WiFi connection mode. Deep sleep mode consumes significantly less power.

Q: Does this support 5V Arduino signals?

A: The module power is 5V but logic is 3.3V. Please use a logic level converter for 5V signal lines to avoid damage.

Q: Does it come with headers soldered?

A: Usually shipped unsoldered for flexibility. This allows you to choose straight or right-angle headers based on your project.

Q: Can I use this with MQTT?

A: Yes, it supports MQTT protocols. You can flash custom firmware like Tasmota or ESPEasy to enable this feature.

Q: Is an external antenna required?

A: No, it features an onboard PCB antenna. No external components are needed for standard range operations.

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