3hr “self test” emergency lighting conversion kit. To suit multiple 4-pin fluorescent lamp wattages and circuits. 4-pole change over relay plus additional 5th pole for HF ballast isolation. This conversion kit is tested in accordance with BS 5266 and lamp & battery condition is monitored. Supplied with 500mm Bi-Colour (Green/Red) charge healthy LED indicator and mounting collar, T1 NiCd Batteries and AMP irreversible battery connector.