How to integrate a latching/unlatching relay when you are out of inputs

Many of Microscan's bar code scanners and imagers have the ability to have an output latch. The problem comes when you need to unlatch. You need an input to unlatch such as the new master pin or the trigger pin. But chances are, you're already using them for the application. Only the 890 with a wiring box has an extra input. The above picture is of a magnetic latching relay. You can send it a pulse and it will latch. It just requires a toggle switch to the extra coil to reset the relay.
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