btmeter bt 881d digital illuminance handheld light meter 0 1 400 000 lux 270º rotated sensor for plants led lights light tester
Case size (L× W× H)52.3 × 48.7 × 12.9 mmWeight89 gCase / bezel material: Stainless steelBandResin BandWater resistance100-meter water resistancePower supply and battery lifeApprox. battery life: 2 years on CR2016Smartphone Link featureMobile link (Automatic connection, wireless linking using Bluetooth®)AppsCASIO WATCHESApp connectivity featureAuto time adjustmentEasy watch settingApproximately 300 world time citiesStopwatch data transferSchedule timerPhone finderGlassMineral GlassWorld timeWorld time 38 time zones (38 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch1/1000-second stopwatch Measuring capacity: 00'00'000~59'59'999 (for the first 60 minutes) 1:00'00'0~23:59'59'9 (after 60 minutes) Measuring unit: 1/1000 second (for the first 60 minutes) 1/10 second (after 60 minutes) Measuring modes: Elapsed time, lap timeTimerCountdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)Alarm/hourly time signal5 daily alarmsHourly time signalLightDouble LED light LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)Light colorLED: WhiteCalendarFull auto-calendar (to year 2099)Mute featureButton operation tone on/offAccuracyAccuracy: ±15 seconds per month (with no mobile link function)Other featuresHand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)Airplane mode12/24-hour formatSchedule beeper on/offDate/month display swappingDay display (days of the week selectable in six languages)Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (linked to each mode) Digital: Hour, minute, second, pm, month, date, dayID: 50012085
