I have a dual AL-8 system installed , for some reason I have a third one I received as bonus , not being obliged to return it .
I asked Vito if I can use a phone doubler(2 sensors on one jack) on my dual control box , he does not advice to do it ... without explaining what would happen ...
By now I keep the sensor as back-up , its parking function is debilitated but not the jamming capability .
I discard the possibility to order a 4 sensors control box for $$ reason.
Someone would know if the AL sensor can work as a blinder sensor will work without being connected to the control box , just give it 12 volts on black/red wires , it will give no led/sound but will respond to laser (Osprey).