Ei 167RC Sounder 230V with 10yr Lithium Back UpNO LONGER AVAILABLE Ei 167RC Sounder 230V with 10yr Lithium Back Up The Ei167RC is a remote siren that runs on 230V AC mains power, and has built in tamper proof rechargeable lithium cells that act as a battery back up in the event of mains failure. These rechargeable lithium cells are designed to have a ten year life and outlast the life of the unit itself, whilst providing up to six months of operation without mains power. Fire Trade Supplies The