TECOM Panel, Buffered 4 Way Relay

The TS0843 is a 4-way buffered output expander that provides four double pole, double throw relays to activate physical devices from either positive or negative level triggers. While its uses are many and varied, typically this device is used to extend the capability of a convenient open collector output on a RAS to a more powerful relay that can be used to trigger a strike on a door. The TS0843 can be used as a whole unit of 4 relays, or easily snapped apart as single or double relays.