Hello, I have a very very old Secom Securitecth SK3 control unit alarm. We havent used it for at least five years and now need to take it out due to redecorating. the only problem is we cannot remember the code for it. Would an electrician be able to take it out or do I need to locate an engineer. I have tried calling Secom but they are unable to help as its such an old system. Does anyone have any advice please?