Currently have a gardtec 800 series which sends a signal to the security hut on a bell trigger (prodigi i think- not to hand at mo)

Now have an extra building seperated from original building and without expense i was gonna pop in a galaxy i have lying about. This galaxy needs to also send signals to the security hut, i have a screened 4 core between the two (galxay and 800 series). If i were to programme an output from the galaxy as a bell and connect this to the trig on the pro digi aswell, would tht cause a conflict with the signal. im sure the signal would still be sent but the alternate panel recieving a signal back to the panel im not sure about.

I know might be easier to buy a speech dialer or an expander for the galaxy but prefer no expense and have none lying about!

Separate trigger obviously, a +ve. Common up the negs.

Did this before with a Castle and a Menvier.