The VOC tester PCE-VOC 1 is particularly suitable for checking indoor air quality. The TVOC provides insight into the quality of indoor air. This VOC tester is characterized by its large display and ease of use. Only three buttons on the VOC measuring device allow for quick operation with the PCE-VOC 1. In addition to displaying the measurement values, the user can visually recognize the alarm on the display. The display turns red when a critical VOC or HCHO measurement value is reached. The air quality measurement can be displayed by the VOC tester in mg/m³ or in PPM. The VOC testing device PCE-VOC 1 is equipped with a lithium-polymer battery that ensures operation for several hours. The built-in battery is charged via the power supply, which can be connected to the VOC tester.