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  6. Handheld Light Meter BS-WT81

Handheld Light Meter BS-WT81

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BS-WT81

last updated:Sep 11, 2026

ビットストロング
ビットストロング
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Handheld illuminance meter for managing brightness in offices and factories.

This is a digital illuminance meter that can handle a wide range of applications, from managing illuminance in offices and factories to light source management in humid plant factories. It employs a "photodiode + cosine correction element + visual sensitivity correction filter" in the light receiving section to reduce errors caused by incident angles and wavelength characteristics. Additionally, it has a built-in high-sensitivity NTC thermistor, allowing for simultaneous measurement of environmental temperature with an accuracy of ±1.0℃.

    Anemometer
GM816正面.jpg

Handheld Light Meter BS-WT81

GM816正面.jpg
GM816正面.jpg
  • Related Link - https://www.bitstrong.co.jp/store/bs-wt81/

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basic information

Main components of the sensor unit: Photodiode + Cosine corrector + Correction filter ● Illuminance measurement function Illuminance measurement range: 0 to 200,000 lux Accuracy: ±3% rdg (below 10,000 lux), ±4% rdg (above 10,000 lux) ● Temperature measurement function Temperature measurement range: -9.9℃ to 49.9℃ Temperature accuracy: ±1.0℃ Temperature sensor: NTC thermistor ● Operating and storage environment Operating temperature: 0℃ to 40℃ Operating humidity: 10 to 90% RH Storage temperature: -10℃ to 50℃ Storage humidity: 10 to 90% RH ● Main unit specifications Power supply: 1.5V AA batteries x 3 Dimensions: 56 x 194 x 36 mm Weight: 210 g Backlight display: Yes (not available during data recording, data reading, and data deletion modes) Auto OFF function: Yes LCD screen update speed: 2 times/second

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Illumination management in offices and factories, light source management in humid plant factories, simultaneous measurement of environmental temperature 【Main Features】 - Highly reliable optical design: Adopts a light receiving section that combines a silicon photodiode with a "cosine corrector" and "visual sensitivity correction filter." It corrects light from oblique angles and wavelength differences from light sources to derive accurate values. - Wide range measurement & high-speed sampling: Measures a wide range from 0 to 200,000 Lux with auto-ranging. High-speed sampling at two times per second captures fluctuating light sources in real-time. - Strong in environmental management with "NTC temperature measurement" and "moisture resistance": Measures environmental temperature (-9.9 to 49.9℃) simultaneously with illumination using a high-precision NTC thermistor. It can operate in humidity levels up to 90% RH, making it safe to use in humid environments such as greenhouses and agricultural houses. - Comprehensive measurement and recording modes: In addition to current values, it supports maximum (MAX), minimum (MIN), and differential display (Δ mode). It allows for convenient data export and threshold warning settings (screen icon blinks when exceeding set values).

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Vane Anemometer - Temperature Wind Chill Index - Wind Speed Measurement BS-GM816

Vane Anemometer - Temperature Wind Chill Index - Wind Speed Measurement BS-GM816

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ビットストロング

ビットストロング

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Our main business focuses on image inspection/measurement equipment and medical imaging systems, with particular emphasis on the following areas: - Medical refrigerators operating at 2°C to 8°C, bio-medical freezers for vaccinations, uninterruptible power supplies (UPS), temperature remote monitoring tools, temperature loggers, etc. - Alcohol testers that can instantly check the alcohol concentration in breath with just a blow. - High-precision thermal imaging products for body temperature measurement, facial recognition and vehicle recognition terminals, surveillance cameras, and commercial conference systems. - The world's first infrared thermometers (for hospitals, families, hospitals/nursing facilities, wall or stand-mounted, for animal clinics and pet owners), tabletop or portable air curtains, and oximeters. - Electrical and electronic components such as uninterruptible power supplies, various power adapters, cables, transformers, and mounting brackets and stands for tablet devices. - We have sourcing channels from China and Europe, allowing us to provide distinctive products for niche markets. We offer infection control products that are characteristic of workplace vaccination events and serve as an importer of equipment for events, including entrances and vaccination sites, providing both sales and rental options.

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