4 Channel Smartphone Relay Bluetooth Remote Control Kit


This is a Bluetooth Relay remote control kit. Including

  • 1x 4 Channel USB/Wireless Relay Module -DS18B20
  • 1x BluetoothBee Wireless module
  • 1x Waterproof DS18B20
  • 1x Mini USB cable

4 Channel Smartphone Relay Bluetooth Remote Control Kit – TOSR04-T- DS18B20

You can easily control this relay module by your computer or cell phone using Bluetooth. We also provide a FREE android App, TOSR Bluetooth. So you can control your device with your phone very easily.

  • 1x 4 Channel USB/Wireless Relay Module – DS18B20
  • 1x Bluetooth Bee Wireless module
  • 1x Waterproof DS18B20
  • 1x Mini USB cable

USB/Wireless Relay module Description:

  • This USB/Wireless Relay Module allows the computer to control the switching of external devices by using the USB port of your computer!
  • Meanwhile, It has a wireless extension port that can work with XBEE Bluetooth Bee or Wifly Module, which means now you can control your device by ZigBee or Bluetooth, or WiFi!
  • The TOSR04-T module can be powered by USB bus or DC power and provides four-volt free contact relay outputs with a current rating of up to 10 Amp each. It also has a DS18B20 temperature sensor port. So you can use it to make your thermostat or any other similar application yourself.

Relay power rating

  • If the relay is used at a voltage or current exceeding this specification, the life of the contacts may be significantly shortened.
  • A full datasheet for the relays used on the TOSR04 is here: G5LA datasheet. If you use DC Power, the Input voltage should be DC5V.

First Step – Install the Driver

  • The TOSR04-T module uses FT232RL USB to UART chip. Therefore, before using the TOSR04-T, you must download the FT232RL Driver.
  • Connect the TOSR04-T, and windows will detect it and ask for the drivers. Point windows to the inf folder, and it will install the driver.
  • The TOSR04-T will now appear as a com port.


  • The TOSR04-T operates with an easy-to-use command set as described in the table below.
  • TOSR04-T Baud rate: 9600
  • Test program
  • To get the TOSR04-T up and running in the minimum amount of time, we have put together an example program to demonstrate the module’s functionality.


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Product Manuals

If applicable, the Product Documentation, Reference Materials, CAD design(s),.STEP file(s) and/or other drawing files, Manuals, and Tutorials will be available for download upon purchase. The order confirmation email will include a downloadable link to the product file(s), which can also be downloaded from the My Account section if needed.

Founded in 2009, TinySine Electronics is a smart home and open source hardware provider, catering to hardware engineers, DIY enthusiasts and interactive designers. Our ever-growing product catalog includes over 700 components and widgets from sensors, robotic platforms, communication modules to smart home relay boards.

Shipping Policy

We currently ship via the Airmail, DHL, Fedex, TNT, Aramex and EMS to different countries. We will send your package out within 3 Business days after we receive your clear payment. FedEx and DHL, TNT, Aramex do not deliver to PO Boxes. If your shipping address is a PO Box, please select a EMS or Airmail option or your package will be returned to us at your expense. Please NOTE: Any customs duties generated are paid by the buyer, NOT the seller!

Return Policy

Warranty: We guarantee to provide accurate descriptions and high quality product. If you have any problems with your order, please notify us within 60 days from date of shipment of any defective product. You agree to pay for the return shipping on exchanges and returns and we will reimburse this cost upon verification of a defect with the product. Furthermore, no warranty will apply if the product has been subject to misuse, static discharge, neglect, accident, modification, or has been soldered or altered in any way. Returns: If you are not satisfied with a product you bought, for whatever reason, it is possible to return it for refund within 5 days of receipt (10 days for an exchange). You must first advise us by email: support@ozrobotics.com for return authorization. No returns will be accepted without having previously obtained a return authorization. All returns must be in its original mint and clean condition. Returns on damaged, scratched, programmed, burnt, or otherwise played with product will not be accepted. The product must then be returned in its original packaging with its receipt and a small note for the reason of the return. The note will help us to serve you better and improve our products. Reimbursement will be denied for any products which do not conform to the abovementioned conditions Please note that all items will be reimbursed within 3 days of receiving the product (shipping fees excluded). You must cover the cost of returning the product. You will need to pay for shipping (if you want a refund instead of a replacement). Shipping fees will only be refunded if the return is a result of a shipping error on our part.

Shipping costs

Region / Country State Postcode Cost
Any Any Any $25.00
Any Any Any $25.00

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