The TS0840 and TS0841 output expander boards can be connected to the Challenger panel, door/lift controllers and DGP to extend the number of outputs available. These boards are typically used to control physical devices such as lighting circuits, pump motors and generators as well as heating and air-conditioning systems.
The TS0840 is a 4-way output expander board that provides 4 relays to the Challenger Panel (one allocated to strobe), 4 relays to the door/lift controllers, or a possible 8 when two are used on a TS0820 DGP. When fitted to a Challenger Panel or door/lift controller, the TS0840 cannot be combined with other relay boards.