The Extech LT250W is an advanced, compact light meter that measures illuminance levels up to 100,000 lux and is ideal for workplace assessments, building inspections, warehouse areas, security and outdoor lighting, photographic applications and general comfort and health assessments. Thanks to its integrated Bluetooth interface, the device can be connected to the free ExView app, enabling professional, mobile data acquisition and analysis.
The device displays measured values both on its large backlit LCD and in real time on a smartphone or tablet. This allows users to capture trends, record measurement series, set limit values and create reports directly. This particularly facilitates inspections in larger buildings and areas where several measuring points need to be documented.
The light meter offers a fast measuring rate of 0.5 seconds and covers both low and very high light levels with a high level of accuracy. The ExView app also enables the simultaneous connection of up to eight compatible Extech 250W measuring devices, allowing various environmental parameters to be recorded in parallel (e.g. humidity, sound level, air flow, speed).
Functions such as min/max value memory, data hold, automatic switch-off and a tripod thread for stationary measurements make the LT250W a versatile light meter for professional users.
Product features:
- Measured variables: Illuminance in lux and foot-candle (Fc)
- Measuring range foot-candle: 0-9,999 Fc (resolution 1 Fc) / ≥10,000 Fc (resolution 10 Fc)
- Measuring range lux: 0-9,999 lux (resolution 1 lux) / ≥10,000 lux (10 lux) / ≥100,000 lux (100 lux)
- Basic accuracy: ±4 % of the measured value (up to 10.000 lux/Fc), ±5 % for higher ranges
- Measurement rate: 0.5 s
- Large 9,999-count LCD, backlit
- Bluetooth connectivity to the ExView app (iOS from 13.0, Android from 9.0)
- Transmission range: over 10 m, up to 90 m in clear view
- Functions: Min/max, data hold, alarms via app, trend display, PDF reports
- Tripod thread (1/4"-20) for stationary measurements
- Operating conditions: 0-40 °C, ≤80 % rH
- Dimensions: 176 × 53 × 28 mm
- Weight: 90 g
