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Digital UVC Precision Meter Specification: 1.Response spectrum: λ=220~280nm 2.Measurement range: 0~2000uw/cm2 3.Measurement accuracy: 1uw/cm2 4.Response time: T≦0.5S 5.Measurement error: ±10% 6.Built-in power supply: No. 5 dry battery, two sections (not included) 7.Power consumption of the whole machine: ≦ 0.25W 8.Standby time: 1 month 9.Working environment: indoor application Altitude ≦ 2000m Temperature 0~+55°C Kindly Reminder: Before using, please take necessary protective measures, such as UV protection glasses. ➢ Warm up the UV lamp for at least 10 minutes. ➢ For the accuracy data, multiple measurements can be taken mean value method to reduce error. ➢ Please keep the photosensitive device clean. If you need to clean, please use alcohol wipe with cotton yarn. Do not use sharp objects to clean the photoreceptor pieces to prevent damage to the front filter. ➢ If not used for a long time, in order to avoid leakage damage to the illuminance meter, please take out the battery.