Three-door normally-closed interlock module

• Allows only one of three-doors to be unlocked at a time
• Monitor & control inputs for each door
• Optional timer alarm & violate outputs
• User-selectable alarm time-out 1/2, 1, 2, 3 or 5 minutes
• Mild steel tamper-monitored enclosure
• Made in Britain with 5 year warranty

The DA560 monitors the state of 3 doors. This unit is microprocessor-controlled for greater functionality. The unit can be supplied with optional sets of change-over contacts for timer alarm and violate outputs.

The timer alarm contacts change-over if a door, having been opened, is not closed in a pre-determined time. The time is user-selectable.

The violate contacts change-over if more than one door is open at a time (e.g. if a closed door is forced while the other door is open). 12V DC operation.