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Tinycontrol tMTH-4 - temperature and humidity meter - Modbus RTU - for up to 4 AHT20/AM2301B sensors
The tMTH-4 is a temperature and humidity measurement module with a Modbus RTU interface , supporting up to four AHT20 or AM2301B sensors . It uses four independent I2C buses and shares measurement data via an RS485 interface. It works perfectly as an expansion module for LK4, LK3.5+, and LK3.9 controllers, enabling easy monitoring of environmental conditions.
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Product description: Tinycontrol tMTH-4 - temperature and humidity meter - Modbus RTU - up to 4 AHT20 / AM2301B sensors
The tMTH-4 is a module designed for monitoring temperature and humidity using AHT20 and AM2301B digital sensors. It is equipped with four independent I2C buses , allowing for the connection of up to four sensors operating simultaneously. Measurement results are shared via the Modbus RTU RS485 protocol , allowing for easy integration with automation systems, PLCs, and BMS systems. The module is compatible with Tinycontrol LK4, LK3.5+, and LK3.9 controllers , and pre-built configuration files enable quick device startup. Additionally, configuration and firmware updates can be conveniently performed via USB.
Tinycontrol tMTH-4 - temperature and humidity meter - Modbus RTU - up to 4 AHT20 / AM2301B sensors.
The module is equipped with four independent I2C buses intended for connecting AHT20 / AM2301B temperature and humidity sensors.
Main features of the meter
- Support for up to 4 AHT20 or AM2301B sensors : four independent I2C buses allow connection of one sensor to each channel
- Modbus RTU communication : temperature and humidity reading via RS485 interface
- Compatibility with LK controllers : full support for LK4, LK3.5+ and LK3.9 devices
- Easy configuration : Modbus address change via function key or USB console
- Firmware update : convenient upload of new software via USB in bootloader mode
- Configurable I2C bus : the ability to change the operating frequency from 10 kHz to 400 kHz
- Ready-made configuration files : quick integration with Tinycontrol LK systems
Technical specifications of the meter
- Power supply: 5V to 12V DC via connector or 5V via USB
- Supported sensors: up to 4 AHT20 or AM2301B sensors
- I2C buses: 4 independent buses via RJ12 connectors
- Communication interface: Modbus RTU RS485
- Configuration interface: USB Serial
- USB transmission speed: 115200 baud
- Default Modbus address: Slave ID 1
- Default I2C frequency: 20 kHz
- I2C Frequency Configuration Range: 10 kHz to 400 kHz
- Compatibility: LK4, LK3.5+ and LK3.9
- Dimensions: 74 x 40 x 30 mm
- Weight: 50 g
Kit contents
- tMTH-4 measurement module
Useful links
| Name | Value |
|---|---|
| Interface |
|
| Width | 4 cm |
| Height | 8.5 cm |
| Depth | 4 cm |
| Weight | 0.05 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
