Employing a microcomputer-based measurement , it boasts high T-A conversion accuracy and features automatic 0%T and 10%T concentration factor setting, as well as direct concentration reading. The measurement readings are highly accurate, with excellent repeatability and stability. Automatic light gate technology eliminates the need for a blackbody, protecting the photoelectric sensor. It includes kinetic time scanning, time setting, and multiple language switching functions. note：This product does not support 110V voltage. Please do not place an order if the voltage is not compatible, otherwise you will need to provide your own transformer.