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The (SB-MXD) Exit Delay Initiate Device is part of Securitron - Delivery: The Securitron (SB-MXD) Exit Delay Initiate Device is factory-ordered, please allow 3-4 working days' lead time.
SB-MXD - Exit Delay Initiate Device by Securitron
The SB-MXD detects door movement and initiates a signal for delayed egress when used in conjunction with Securitron's XDT logic timers. Door movement tolerance ranges from 1/2" -3/4" [12-18mm}.