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This is a TSTR04 USB relay board which has an OLED display and 4 temperature sensor ports.
In "Normal" mode, you can easily control this relay board by your computer or smartphone via Bluetooth. In "Auto" mode, you can set a threshold value, to let the relay turn ON/OFF based on the temperature. So, you can use it as a thermostat.
The communication method also can be changed easily. Remove the Bluetooth Bee module, it becomes a USB relay. Plug a WiFiBee on it, it becomes a Wi-Fi relay.
The TSTR04 provides four volt free contact relay outputs with a current rating of up to 10Amp each. The TSTR04 module can be powered by USB bus or from a 5V DC power supply. The DC input jack is 2.1mm with positive core polarity, the relays are SPDT types. If you want to power it with DC 12V or 24V, you just need a 12V/24V-5V DC converter.
Note: DS18B20 sensor is not included. You need to buy it separately.
Note: You must need an overheat protection device to avoid the risk of fire if you use it in any heating system.
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 TSTR04 is here: G5LA datasheet
If you use DC power, the Input voltage should be DC 5V.
First Step - Install the Driver
The TSTR04 module uses FT232RL USB to UART chip. Before using the TSTR04 you will need to download the FT232RL Driver.
Connect the TSTR04 and windows will detect it and ask for the drivers. Point windows to the inf folder and it will install the driver.
The TSTR04 will now appear as a com port.
The TSTR04 operates with an easy to use command set as described in the table below.
TOSR04-T Baud rate: 9600
To get the TSTR04 up and running in the minimum amount of time we have put together an example program to demonstrate the functionality of the module.
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 ?
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.