M
matthew2013
I have to install fire alarm bases but im not sure of connections and Electrician is of for few days i know the L1 and L2 is in and out but not sure of black connections he left me some Horizon HRZ 1002 Photo Thermal bases that only show number connections 1-2-5-3 its fitted with a shorting spring between 1and 2 and shows minus so think black connection I know he will check them but id like to have them done right :90: