These are industrial emergency light systems, only available in non-maintained i.e., they only come on in an emergency.

The twin 18-watt version has a battery life of 3 hours.

The twin 55-watt version has a battery life of only one hour.

Obviously, the 55-watt is a lot brighter (1100 lumens) than the 18-watt version.

If you are protecting large areas then you may well need the 55-watt.

These are commonly used in pubs and clubs as well as in warehouses, factories and workshops.

There are guides produced by the manufacturers to help in designing emergency lighting systems, please call us if you need help.