TeesdaleSparkUK, Hi, and welcome to ECN, thanks for the info. Good points you raise, never thought of looking up the number of operations recomended by manufacturers. This seemed to be a popular practice in pubs and clubs a few years back apparently. I see the bigest problem as the fact that the E-lighting is on seperate circuit and is not going to operate unless a complete failure of the mains occures. That and many other things were the reasons for the unsatisfactory status on the P.I.R. Thanks again aland
