This device was mainly designed to control ambient parameters in greenhouses and hives such as temperature and humidity, and can be used in any other similar application. It is implemented a number of programmable algorithms to read input sensors, and control devices on the outputs. A serial MODBUS RTU interface over RS-232 and Serial-Bluetooth, is used to set parameters and the functionality of the device as well as monitoring measured parameters and device status.

Some of the hardware features are as follows:

• STM32F103 microcontroller
• Load-cell input channel using 24-bit Sigma-Delta ADC (AD7780)
• Four onboard temperature sensors: NTC
• Five output relay
• Three isolated digital discrete inputs channel
• Wide range operation voltage: 9 to 30VDC
• One HDC1018 TI Digital Precision Humidity/Temperature sensor channel
• Two PT-100 temperature sensor channels
• RS-232 serial port
• MODBUS over serial (RS-232 and Serial-Bluetooth)