The Haes Excel TPCA05 allows up to eight Excel control panels or repeater panels to be networked.
 
Any combination of panel can be used from a 2 zone to a 32 zone and in any order to provide up to 256 conventional or Twin Wire zones. The card simply plugs in on top of the main circuit board in the control panel.
 
The cards are also provided with six programmable switch negative outputs which can be utilised for any local switching requirements.