What is the Extech SDL400 Light Meter and Data Logger?
The Extech SDL400 Light Meter and Data Logger is a professional instrument designed for UK electricians and technicians who need accurate measurement and long-term recording of light levels in lux or foot-candles. It is ideal for workplace lighting assessments, building inspections and maintenance checks where compliance and documentation are required.
The SDL400 records readings directly to an SD card in Excel format, allowing quick transfer to a PC without specialist software. With cosine and colour-corrected measurements, it delivers reliable results across a wide range of lighting conditions, from low ambient areas to high-intensity installations.
How does the SDL400 support lighting surveys and diagnostics?
In addition to light measurement, the SDL400 includes a Type K and Type J thermocouple input, enabling high-temperature measurements with optional probes. Adjustable logging intervals and large onboard memory make it suitable for short spot checks or extended monitoring, while the backlit display allows easy viewing on site.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
