We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular circuit board with relay and chip marked 7238

Vszerda

Vszerda BK7238 Bluetooth Relay Module Development Board

SKU CH-S44W-4HF7A

Bluetooth relay module with AC/DC power supply for remote home control applications

  • Bluetooth relay control for home automation
  • BK7238 module enables wireless switching
  • AC/DC power supply simplifies installation
  • Development board ready for custom remote applications

Vszerda BK7238 Bluetooth Relay Module

The Vszerda BK7238 is a Bluetooth relay module development board designed for remote control of home applications. It integrates an AC/DC power supply so it can drive connected loads directly from mains voltage. Developers and hobbyists use it to prototype smart-switching projects without designing a separate power stage. The board targets single-channel switching tasks in residential automation.

Capacity and headroom for home switching

The module handles typical lighting and small appliance loads within its rated relay limits. It runs out of headroom when the connected load exceeds the relay contact rating or when multiple high-power circuits must be switched simultaneously. Buyers who need multi-channel control or higher current capacity will need additional modules or a different board. No Bluetooth version or wireless range figure is provided in the data.

Highlights

  • Bluetooth relay control for home automation
  • BK7238 module enables wireless switching
  • AC/DC power supply simplifies installation
  • Development board ready for custom remote applications

Specifications

No published specifications for this item yet.

Questions about this item

Will the BK7238 board control my existing AC or DC powered home devices?

Yes, the module includes an AC/DC power supply and relay output designed to switch mains or low-voltage loads for remote home automation.

How can I verify the BK7238 relay is operating correctly after wiring it?

Pair the board via Bluetooth, trigger the relay from the companion app, and listen for the audible click while confirming the connected load turns on and off.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.