CO2 monitor (carbon dioxide concentration measuring device) TD-8500 1 piece

A carbon dioxide concentration meter that serves as a guide for ventilation. The carbon dioxide concentration detection method used is the NDIR method. Includes manual carbon dioxide calibration function. This product complies with the Ministry of Economy, Trade and Industry's "Guidelines for the selection of carbon dioxide concentration measuring devices, etc." Simultaneous display of temperature and humidity. 2-way power supply: USB power supply (cable included) / 3 x AAA batteries (sold separately). (When using batteries, measurement is performed each time) Power can be supplied from a power outlet by using the power adapter sold separately. By using a mobile battery (sold separately), you can power the device even in places where there are no USB ports or power outlets. Face icon display that informs you of the carbon dioxide concentration state with four levels of facial expression. Body dimensions: Approx. 49 x 86 x 48 mm Weight: Approx. 78g (excluding batteries) Material: ABS resin Installation: Tabletop Power supply: USB power supply (cable included) / 3 AAA batteries (sold separately) Measurement items: Carbon dioxide concentration, temperature, humidity Carbon dioxide concentration detection method: NDIR method Carbon dioxide measurement range: 400-5000ppm Carbon dioxide meter accuracy: ±(5%+50ppm) Thermometer accuracy: ±1℃ (10~40℃ Hygrometer accuracy: ±5% (30-95%RH) Individual packaging dimensions: Approx. 135 x 125 x 50 mm (blister pack) Individual packaging weight: approx. 130g Accessories: Instruction manual (with warranty), USB cable Country of Origin: China