TDLS (Tunable Diode Laser Spectrometry) gas analysis modules are based on the principle of laser spectral absorption.  The modules have:

• High measurement accuracy
•  Wide range
• Quick response time
• Internal temperature compensation and cross interference compensation
• Good stability
• Long service life.

These modules are capable of continuous detection of the gas concentration. The modules have RS485 communication interface and use Modbus communication protocol.