I moved into a house where the smoke alarms were knackered (ground floor was both disconnected and expired, and the first floor was missing completely), so I bought two Aico Ei141RC alarms. The first floor fitting had the normal number of wires (L, N, E, IC) and took five minutes to fit. I then removed the ground floor fitting only to discover that it's connected to the house alarm and has an sprawling mass of wires. Like a complete tool, I disconnected the old fitting without taking any photos, and now I'm flumoxed as to what goes where 
There are 9 wires: 4 red, 2 black, 1 blue, 1 white, 1 green/yellow. So obviously green/yellow is E, blue is N, and presumably white is the IC. I then used an ammeter to check which of the reds is really L. That leaves 3 red and 2 black, and I don't have a cooking clue what to do with them.
The old smoke alarms are Ei150s, and the security alarm is a 12 year old Gardtec, I think model 370 581/582.
Does anyone have experience connecting a smoke alarm to a house alarm, or even better specs on how to connect a Gardtec? Any other ideas?
There are 9 wires: 4 red, 2 black, 1 blue, 1 white, 1 green/yellow. So obviously green/yellow is E, blue is N, and presumably white is the IC. I then used an ammeter to check which of the reds is really L. That leaves 3 red and 2 black, and I don't have a cooking clue what to do with them.
The old smoke alarms are Ei150s, and the security alarm is a 12 year old Gardtec, I think model 370 581/582.
Does anyone have experience connecting a smoke alarm to a house alarm, or even better specs on how to connect a Gardtec? Any other ideas?
