TSLR0511 – 1 Channel Smartphone Bluetooth Bistable Relay – (Android/iOS/Low Energy)

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