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What is it?
The Sensitron SMART 3H-Lite is an advanced gas detector specifically developed for detecting A1 and A2L refrigerants, commonly used in air conditioning and refrigeration systems in settings such as hotels, technical rooms, or commercial buildings. This detector is equipped with an infrared sensor, an internal buzzer, and a clear status LED, allowing users to quickly identify the current situation. With two pre-programmed relay outputs and RS485 (Modbus) communication, the SMART 3H-Lite is easy to integrate into existing alarm or building management systems. It is available in versions powered by 12–24V DC or 90–240V AC, making it suitable for a wide range of applications.

How does it work?
The SMART 3H-Lite uses non-dispersive infrared (NDIR) technology to detect gases accurately. When a concentration exceeds the set threshold, the relay outputs are automatically triggered and the internal buzzer sounds an acoustic alarm. The RS485 interface enables the device to transmit and receive data, supporting remote monitoring or integration into a central system. Its design features no moving parts, ensuring long life and minimal maintenance. The detector operates reliably in environments with high humidity or fluctuating temperatures, making it ideal for demanding conditions.

What problems does it solve?
A refrigerant leak can have serious consequences, including environmental damage, health risks for personnel, and failures in cooling systems. The SMART 3H-Lite provides a reliable and early warning of gas leaks, helping prevent dangerous situations. Thanks to its robust design, flexible connectivity, and intuitive alarm system, the detector offers a safe and efficient solution for gas detection in commercial applications.