The Swingmatic Spring is ideal for fire doors as its mechanism automatically draws it shut in the event of a power failure. It is a robust and compact door operator that utilises the latest encoder technology and is easy to set up using a plug-in hand-held programmer. The Spring requires a 13amp socket or spur nearby to connect into and can be installed onto doors up to 1000mm wide and 100kgs. It is supplied with remote control as standard but can also be operated using other activators. The Spring is supplied with an adjustable articulated operating arm for additional mechanical advantage.