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AJMRTC ESP32 Development Board 4Channel BT Relay Module, AC 220V 30A 4 Way Relay Control Board, Bluetooth Wireless Switch Module, Supports Secondary Development for Home Automation DIY IoT Project
- Integrated ESP32 main controller with Bluetooth function, realize wireless remote control of 4way relay outputs for smart switching applications.
- Each relay supports up to AC 220V 30A load, capable of controlling highpower electrical equipment for home and industrial DIY projects.
- Opensource hardware design supports secondary development, convenient for users to write custom firmware according to actual usage demands.
- Clear terminal block and pin layout for simple wiring; optocoupler isolation enhances antiinterference performance for stable operation.
- Compact board structure fits cabinet installation, widely used for smart home control, equipment switching and IoT automation builds.
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AJMRTC 4way ESP32 Bluetooth relay module combines ESP32 development unit and highcurrent relay switches. It provides four independent relay channels, each rated for AC 220V 30A to drive highvoltage highcurrent loads. Builtin Bluetooth enables wireless triggering for remote onoff control. This board reserves complete GPIO and programming interfaces, fully supporting secondary development for custom logic and function modification. Optocoupler isolation circuit separates control circuit from load circuit, reducing external signal interference and improving system stability. Equipped with easytowire terminal blocks, this relay board is suitable for smart home automation, light control, equipment power switching and various IoT DIY embedded projects.
Specifications- Brand: AJMRTC
- Main Chip: ESP32
- Wireless Communication: Bluetooth
- Relay Channel: 4Channel
- Relay Rated Load: AC 220V 30A per channel
- Feature: Supports secondary development, optocoupler isolation
- Installation: Screw terminal wiring
- Application: Smart Home, Equipment Control, IoT Automation, DIY Electronic Project
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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