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TSLR0511 BLE relay is a low power consumption relay board supports both Android and iOS. 

It’s a convenient and easy-to-use product that be used to control any electrical types of equipment. 

You can pair up the device with your smartphone or computer. Open the APP->Connect Device, use your phone to search for a new Bluetooth device. The module will appear as "TSLR0511". Connect it, and then you can control the relay turning it ON/OFF.

TSLR0511 can be powered with a 3.7V lipo battery. Its standby current is 1.3mA. It's very suitable for mobile applications, outdoor project or other environments without a power source. TSLR0511 also allows computer control switching of external devices by using the USB port of your computer (you need to remove the Bluetooth module first)


The TSLR0511 provides a volt free contact relay outputs with a current rating of up to 5Amp. The module is powered from a lipo battery or a 5V DC power supply or USB. The DC input jack is 2.1mm with positive core polarity, the relay is DPST bistable type.

Smartphone APP:

We also provide FREE Android/iOS App. You can control your device by your phone very easily.


Android APP(Bluetooth)

iPhone APP (Bluetooth) 

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 TSLR0511 is here: DSP2a-L2-DC3V datasheet

If you use DC power, the input voltage should be DC 5V. 

The TOSR141 operates with an easy to use command set as described in the table below.

TOSR141 Baud rate: 9600  


  • Working voltage: 3.3-5V DC
  • Dimension: 51x49x16(mm)
  • Standby Current 1.3mA@3.7VDC
  • Current rating of up to 5 Amp.
  • Bluetooth BLE 4.0


  • All the order are shipped within 2 business days. 
  • Products are either shipped from China or Australia. Item locations are mentioned on the product page.
  • Customers will receive tracking code if they have selected the 'shipping method with a tracking code'.
  • Returns are accepted if the customers return the items within 1 month to our address in Australia. If the item has been shipped from China, the customer still has to return the item to Australia. 
  • Return post fees have to be paid by customers. If the product is defective, we will pay the shipping fees.


Shipping fees for Australian addresses(Item Location: Australia):

  • Standard Post- using Australia Post: US $5.95 ~ AU $9.00 
  • Express Post: US $9.95 ~ AU $15.00


Shipping fees for international addresses (Item Location: Australia):

  • Economy Post (with NO tracking code): US $6.50 ~ AU $9.95
  • Standard Post with tracking code: US $17.50 ~ AU $26.50
  • Express Post with tracking code: US $36.50 ~ AU $55.00


Shipping fees for Australian and international addresses:(Item location: China):

  • Registered post with a tracking code: US $3.95 ~ AU $6.00 
  • Express Post with tracking code: US $25.00 ~ AU $38.00 


How long does it take to reach the USA, UK, Germany, Australia Canada and other EU countries?  

From China: If we ship from China, the delivery time can be from 7 working days to 15 working days. See the proof on the images below. US based orders are delivered more quickly than other countries.

Most of the USA, UK, Canada, Australia, and Germany  based orders are delivered within 7 days. However, because of customs related processes, it can sometimes take up to 15 days.  Check out all the shipment proof images on this page. 


From Australia: If you have chosen standard post, you will receive your parcel in 3-5 days (in Australia) and 5-7 days (outside Australia)

If you have chosen economy post, you will receive your parcel in 3-5 days (in Australia) and 15-25 days (outside Australia)


What is the proof that we really ship and they are delivered ?

 Check out all the shipment proof images on this page. 


Where do we ship from ? 

We ship our products from Australia and China depending upon what you purchase. BuildCircuit's original products are shipped from Australia. 

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