3-hour Emergency lighting conversion module kit suited for multiple 4-pin fluorescent lamp wattages and circuits. It includes 4-pole change over relay plus additional 5th pole for HF ballast isolation. Kit comes complete with emergency module itself, battery, leads, and LED charging indicator; everything you will need to convert an existing fluorescent fitting into a maintained emergency fitting. In the maintained mode the emergency lighting power supply unit is used in conjunction with the normal ballast or ballasts to ensure the availability of light during normal and emergency conditions. Suitable for integral mounting.