Citizen is famous for making clocks and watches. But in addition to clocks and watches, Citizen also produces medical devices such as blood pressure monitors and infrared thermometers. Citizen's thermometers are backlit, as well as object mode measurement with a large measurement range, covering the range of -22.0°C ~ 80.0°C, even if the ambient humidity reaches 85%, which also expands its practicality to a certain extent.
 
Compared with Hua Shengchang's "bulky", the Citizen infrared thermometer is on the small side, and adults can wrap it with one hand. The common ones are the forehead thermometer TH30F and the CTD711 for both ears and foreheads, although the goose egg-shaped appearance has a non-slip texture design, but due to the small size, the grip is average. In terms of measuring body temperature, there is no eye-catching, the price of more than 400 yuan, the cost performance is very low, and CTD711 is not equipped with disposable earmuffs, which is not hygienic enough when used by many people, so it is necessary to wipe the probe with alcohol after each use, and the use experience is far inferior to Braun, Omron and other brands.