The NDIR sensor is based on the Beer-Lambert law and uses an LED narrow-band light source and a fast-response photodiode (PD).  Combined with a low-power circuit and an optimized optical system, it achieves ultra-low power consumption while meeting the performance of conventional NDIR infrared sensors.  On the one hand, it can reduce the node load and increase the loading quantity of the bus-type gas detection equipment.  In addition, it is more suitable for battery-powered portable products and wireless gas detection equipment.  Compared with the traditional solution, it can monitor gas leakage in real time without the need for long-term pulsed intermittent work, and is safer and more reliable.