The unit is operated by pressing the EN54 compliant non-frangible (plastic)
element and can be tested by insertion of a test key in the underside of the unit.
Two terminal blocks are provided for easy connection to the zone wiring.Features
Supports either a 'Frangible Glass' element or a 'Non Frangible Plastic' element
Wiring terminals can accommodate up to a 2.5 sq mm solid conductor