2 Channel Smartphone Bluetooth Relay TOSR121 – (Password, Momentary and Latching)
TOSR121 Bluetooth Relay kit supports both Android and iOS and it has password. It’s a convenient and easy-to-use product that can be used to control any electrical equipment. You may wish to pair with a mobile phone or a computer (etc). Open the APP->Connect Device, use your phone to search for a new Bluetooth device. The module will appear as “BT Bee-BLE”(iOS) or “BT Bee-EDR” (Android). Connect it, and then you can control the relay’s ON/OFF. The communication way also can be changed easily. Remove the Bluetooth Bee module instead with a WiFiBee, it becomes a WIFI relay.
TOSR121 is an upgraded version of TOSR02. It supports password. It can be set to latching or momentary outputs. TOSR121 allows computer to control switching of external devices by using the USB port of your computer. It also has a wireless extension port, can work with Xbee or BluetoothBee or WiFibee Module, so you can control your device via zigbee or Bluetooth or WiFi!
The TOSR121 provides four volt free contact relay outputs with a current rating of up to 10Amp each. one DS18B20 temperature sensor port. The module is powered from a 5VDC power supply (or USB). The DC input jack is 2.1mm with positive core polarity. The relays are SPDT type. If you want to power it with DC12V or 24V, you just need a 12V/24V-5V DC converter.
Note: Relay board default password is: 123456
Note: Please remove the Bluetooth module when you use USB control.
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 TOSR121 is here: G5LA datasheet
If you use DC Power, the Input voltage should be DC5V.
First Step – Install the Driver
The TOSR121 module uses FT232RL USB to UART chip. Before using the TOSR121 you will need to download the FT232RL Driver.
Connect the TOSR121 and windows will detect it and ask for the drivers. Point windows to the inf folder and it will install the driver.
The TOSR121 will now appear as a com port.
The TOSR121 operates with an easy to use command set as described in the table below.
TOSR121 Baud rate : 9600
To get the TOSR121 up and running in the minimum amount of time we have put together an example program to demonstrate the functionality of the module.
Working voltage: 5VDC
Standby Current 10mA/5VDC
Current rating of up to 10 Amp.
Latching or momentary outputs