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TinySine Bluetooth Smartphone Relay with 4 Channel Outputs and 4 optically Isolated Inputs  – TSIR04

$52.95

This is a TSIR04 Bluetooth version relay board with optically isolated inputs and OLED display and temperature sensor port. Very powerful and easy to use. You can easily control this relay board by your computer or smartphone using Bluetooth. The communication way also can be changed easily. Remove the Bluetooth Bee module instead with a WiFiBee, and it becomes a WIFI relay. It will be a USB relay when you plug a USBBee. Very convenient to use.

TinySine Bluetooth Smartphone Relay with 4 Channel Outputs and four optically Isolated Inputs  – TSIR04

This is a TSIR04 Bluetooth version relay board with optically isolated inputs and OLED display and temperature sensor port. Very powerful and easy to use. You can easily control this relay board by your computer or smartphone using Bluetooth. The communication way also can be changed easily. Remove the Bluetooth Bee module instead with a WiFiBee, and it becomes a WIFI relay. It will be a USB relay when you plug a USBBee. Very convenient to use.

The TSIR04 provides four-volt free contact relay outputs with a current rating of up to 10Amp each. The module is powered by a 5V (12V) DC power supply. The DC input jack is 2.1mm with positive core polarity. The relays are SPDT type.

  • Optically Isolated Inputs: TSIR04 has four optically Isolated input ports. Input voltage absolute Max. 30v DC, Operational 4.5v to 27v DC. TSIR0x has two working modes:
  • Normal mode: When the board reads an input signal, it will report the input state.
  • Auto mode: When the board reads an input signal, it will report the input state and turn on the corresponding relay. When the input voltage is removed, the relay will be turned off.
  • OLED display: The OLED display shows the current board state. You can check the state, and there is no need to connect with your PC.
    Current mode: Manual/Auto

IN1:0/1 RLY1:ON/OFF
IN2:0/1 RLY2:ON/OFF
IN3:0/1 RLY2:ON/OFF
IN4:0/1 RLY3:ON/OFF
Temperature: xxx degree

  • 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 TSIR04 is here: G5LA datasheet
  • Please choose the correct DC power supply for your board.
  • Commands: The TSIR04 operates with an easy-to-use command set as described in the table shown in the product images.
  • TSIR04 Baud rate: 9600

Test program
To get the TSIR0x up and running in the minimum amount of time, we have put together an example program to demonstrate the module’s functionality. We also provide a FREE android App TSIR Bluetooth. So you can control your device with your phone very easily.

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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

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