I placed a piece of tape on the edge of the line 25 feet apart, rotated the unit 90 degrees and it was still almost square on the tape. It's very accurate. The brightness of the line varies in different places, but that's acceptable.
🌬️ Продвинутый внутренний монитор качества воздуха 3 в 1 с записью данных CO2/RH/Temp и звуковой сигнализацией - технология сенсора NDIR
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