DM502-O3 7-in-1 Air Quality Monitor

The DM502-O3 7-in-1 air quality monitor is an indoor safe gas detector designed for environments containing ozone gas. It can be used to detect pollution in offices, indoor, and fitness facilities. It has 24 hours real-time monitoring capability. This weight detector is made of high-quality ABS plastic material. It also has a powerful 1200mAh built-in Li battery. This ozone detector is detected by an electrochemical gas sensor, which has excellent sensitivity and excellent repeatability. So users can use it with confidence.