LED Microsensor NT LLC. is a company focused on developing and manufacturing optoelectronic devices for the infrared spectral range from 1000 to 5000 nm. The company offers a wide range of Light Emitting Diodes (LEDs), LED matrices, spectral matched Photodiodes (PD) and systems on their basis. We propose our product as a new powerful base for optical absorption analysis in various applications, including NDIR gas analysis, environmental monitoring, moisture detection, thickness control and many others. Using LED-PD optopairs allows development of portable sensors with high reliability, adequate accuracy, short response time, low power consumption and long life time. A new line of LED-based devices has been recently released - ultracompact LED minispectrometers. First modification for reflectance-mode measurement (LMS-R model) is already available for purchasing.