CUSTOM Checker LED Display with Buzzer Sound Notification Function When Exceeding Domestic Environmental Values PM-2.5 9-level Standards/guideline

---------------------------------------------------------------------- 【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ---------------------------------------------------------------------- ●For checking the concentration of PM2.5 at home or on site. ●Used as a guide for vehicles, elderly people, etc. when going outdoors. ●Power supply: DC5V (power supply from micro USB using commercially available AC adapter, etc.) ● Built-in rechargeable battery ● Charging time: Approximately 5 hours (when using an AC adapter with an output capacity of 1A) (AC adapter not included), Continuous use time: Approximately 7 hours ● Operating temperature and humidity: 0℃ ~ 40℃, 80%RH or less (no condensation) ●Storage temperature and humidity: -10℃ to 50℃, 80%RH or less (no condensation) ●Sensor: Dust sensor ●Dust particle detection size: Approx. 0.5μm ●Measurement range (μg/[[cubic]]): Approximately 0 to 105 (displayed in approximately 12μg/[[cubic]] division by 9 LEDs) ●Resolution (μg/[[cubic]]): Approx. 12 (for 1 LED) ●Measurement accuracy (μg/[[cubic]]): ±12 (for 1 LED) ●Mass: 270g