Hi, the yellow is for the positive output of the alarm and the green goes to the negative. You can connect those instead of the siren which is 12 volts.
Sam.
Hey mate. Just read your post about the 50 cuM rule for loft conversions under PD. Have been trying to clarify the exact same thing.
Did you ever find out if the 50 only applies to roof alterations, so a 70 cuM loft could still be done under PD, if no roof alterations were carried out??