Relay module No name ESP12-2R-D8 Wi‑Fi — ESP12 board with 2 relays (model ESP12-2R-D8)

Wi‑Fi relay module No name ESP12-2R-D8 is a compact control board built on the ESP12 platform that provides two independent relay outputs and wireless connectivity. The board is intended for remote switching and basic automation tasks over a Wi‑Fi network. It can be integrated into smart home systems or used in DIY electronics projects that require Wi‑Fi control of lighting, small appliances or electromechanical actuators.

Advantages

The module combines a small footprint with dual relay outputs and native Wi‑Fi communication, enabling remote control without additional network adapters. Low power consumption in idle states and simple integration with common microcontroller environments make it suitable for embedded projects. Independent relay channels allow separate control of two circuits and facilitate straightforward wiring for AC or DC loads within the device's rated limits.

Suitable for

• Remote switching of lights and lamps
• Control of small household appliances and fans
• Integration into smart home automation systems
• DIY electronics and prototyping with Wi‑Fi control
• Triggering of actuators and low-power motors

Key specifications

• Wi‑Fi connectivity based on the ESP12 module
• Two independent relay outputs for switching loads
• Compact PCB form factor suitable for enclosure mounting
• Supply voltage compatible with typical ESP12-based boards (refer to device markings or documentation before powering)
• Standard relay contacts for AC or DC switching within the relays' rated current and voltage

How to use

Connect a suitable power supply to the module following the board's supply voltage requirements and ensure correct polarity. Wire the controlled loads to the relay common and normally open/closed contacts according to the intended behavior. Configure the module via its Wi‑Fi interface or accompanying firmware tools to join the local network and set control parameters. Use appropriate isolation and insulation when working with mains voltages and verify relay ratings against the load before operation.

Usage recommendations

For safe and reliable operation, mount the board inside a protective enclosure when controlling mains-powered devices, keep wiring neat to avoid short circuits, and verify the relay contact ratings against the expected load current. When integrating into automation systems, update firmware and set secure network credentials to reduce unauthorized access.