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Small green circuit board with six gold pins and a silver rectangular module

Vszerda

Vszerda R3 6 Pin RS232 Relay

SKU CH-H3TR-TD28E

Electronic circuit module with 6-pin RS232 and TTL interfaces plus Bluetooth HC-05 wireless RF transceiver

  • RS232 and TTL interfaces enable direct serial links
  • 6-pin header simplifies wiring to microcontrollers
  • HC-05 Bluetooth module adds wireless data transfer
  • RF transceiver supports wireless communication paths
  • Ready-to-use assembly reduces integration time

R3 6-Pin RS232 Relay Module

The Vszerda R3 is a six-pin relay module with an RS232 interface and TTL logic levels. It integrates an HC-05 Bluetooth transceiver for wireless RF communication. The unit arrives fully assembled and ready for integration into custom electronic projects.

Makers needing wireless serial control

Developers building remote-switching prototypes will benefit from the combined RS232 and Bluetooth links. The module suits low-voltage logic circuits but is not designed for high-power mains switching. Buyers who require isolated high-current contacts or a different serial protocol should consider other options.

Six-pin RS232 and Bluetooth interface

The board exposes six pins carrying RS232 and TTL signals alongside the HC-05 Bluetooth radio. This pin-out determines wiring compatibility with the host controller. Verify that the target system matches the 232-level signaling and the six-pin layout before purchase.

How it compares

Measured against everything we stock in Relays & Push-Button Switches, at today’s prices. Recalculated every night.

Price $16.99
Typical for this category: the median of 15 items is $16.99.

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the R3 module is communicating after wiring the 6 pins?

Connect the RS232 pins to a serial terminal and send AT commands; the module should reply with OK when it is working.

What comes with the R3 6 Pin RS232 board and what must I source separately?

The board arrives as a single module with the HC-05 Bluetooth transceiver fitted; you only need to provide power and serial cables.

Which version of the R3 should I choose for a 232 serial link?

The listed R3 6 Pin RS232 model is the only version offered and includes the RS232 interface together with TTL and Bluetooth.

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