Archive for January, 2013


Posted by Jon Whiten on January 17, 2013 in Uncategorized

Tech Thursday – Light Part 3 – Colour

This is the final instalment in our short three part series discussing Light. In the first part we will briefly looked at what we define light to be and went on to discuss some of the photometric units that are typically found in photometric measurements. In the second part we discussed Luminous Intensity and in […]

Posted by Jon Whiten on January 10, 2013 in Uncategorized

Tech Thursday – EN54-23

What is EN54-23? EN54-23 or to give it its full title “Fire detection and fire alarm systems – Part 23: Fire alarm devices – Visual alarm devices”, was produced to standardise the requirements, in terms of construction, robustness and performance of warning beacons used within a fire detection system.  The purpose of the beacons being […]