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LT250W: Light Meter with Connectivity to ExView® App


Out of stock

  • Measure light intensity up to 100,000 Lux (10,000 Fc) with measuring rate of 0.5 sec
  • Transmit, view, and share data directly from a mobile device via Bluetooth connection to the ExView app
  • Record Max/Min readings
  • Freeze display with ‘Data Hold’
  • Save battery life with Auto Power Off feature
  • Mount on tripod with standard 1/4″-20 mounting screw
  • View data on both the bright, backlit RPM250W LCD display and from the app on iOS® or Android™ mobile devices (offers both day mode and dark mode)
  • Connect up to eight compatible Extech Connected 250W Series meters to the app simultaneously
  • Set up data recording and program high/low audible alarms through the app
  • Export data in .CSV file format or send PDF reports—including photos of the measurement location—from the app
  • Comes complete with 3 AAA (1.5 V) batteries

Product Catalogue

LKR 99,000

Out of stock


The LT250W is a compact light meter with Bluetooth® connectivity, which allows building and maintenance professionals to view and share light intensity data directly from a mobile device using the free ExView app. With the capability to capture data, display trends, set visual and audio alarms, and create and send reports, users can gain deeper insights on workplace comfort and building health. The LT250W is part of the Extech 250W Connected Series of products that can improve your ability to evaluate problems and report on them from the field. This allows you to improve the speed and quality of decisions to address critical issues immediately.

  • EASY, FLEXIBLE OPERATION – View data on both the large backlit LCD display and from iOS® or Android™ mobile devices using the ExView app via Bluetooth.
  • STANDALONE CAPTURE AND DISPLAY – Measure light intensity data up to 100,000 Lux (10,000 Fc), record max/min readings, and freeze the display with ‘data hold’ feature.
  • PORTABLE COLLECTION, ANALYSIS, AND REPORTING – Export .CSV data; create and send PDF reports including photos of the measurement location taken with a connected smartphone or tablet camera.

LT250W: Light Meter with Connectivity to ExView® App

Light (Foot Candle)
0 to 18,571 Fc
Light (Foot Candle) Basic Accuracy
±4% of reading (<9,999 Fc); ±5% of reading (≥10,000 Fc)
Light (Foot Candle) Max Resolution
1 Fc (<9,999 Fc); 10 Fc (≥10,000 Fc)
Light (Lux)
0 to 199,900 Lux
Light (Lux) Basic Accuracy
±4% of reading (<9,999 Lux); ±5% of reading (≥10,000 Lux)
Light (Lux) Max Resolution
1 Lux (<9,999 Lux); 10 Lux (≥10,000 Lux); 100 Lux (≥100,000 Lux)
Sampling Rate
0.5 sec
Wireless Connectivity
Bluetooth® (via ExView iOS/Android mobile app)
Wireless Transmission Range
up to 90 m line of sight
6.9 × 2.1 × 1.1 in (176 × 53 × 28 mm)
5-digit (99999-count) backlit segment LCD display
Operating Conditions
32 to 104°F (0 to 4°C),≤80% RH
3 × AAA (1.5V) batteries
1 years
3.2 oz (90 g)

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