Please note later systems from 2017 onwards may have a USB Keyed System. All Our Atlas bulbs come with the USB stick.

These bulbs are supplied with a USB stick but are not Compatible with newer versions of Calmag systems with USB sticks as the Calmag coding prevents the bulb from working

If in doubt, please call us for advice

Please call us if unsure

We do sell replacement PSU units that gets round the compatibily issue