Description
The Electric Mortise Lock (EM) Exit Device has all characteristics of the standard mortise lock exit device, and has the feature of being electrically controlled by a remote switching device (such as a key switch, digital keypad, card reader or control console). The EM exit device electrically controls the outside trim to unlock and lock the door. The key cylinder on the outside trim may retract the latch bolt for mechanical override at any time when lockset is electrically locked.
Accessories
The EM exit device requires the folling accessories:
1. An electric hinge or electrical power transfer
2. A key switch or digital keypad
3. A power supply
* All these items are ordered separately.
Two Features
(1) Fail Safe Control - Electrically locked (EL)
Model No. 8820S-EL/MEL , 8820F-EL/MEL
Outside lever is locked when power is applied and unlocked when power is removed. (Storeroom function when energized.) Lockset will unlock in the event of a power failure. If choose this function, specify model no. 8820S-EL/MEL or 8820F-EL/MEL.
(2) Fail Secure Control – Electrically unlocked (EU)
Model No. 8820S-EU/MEU , 8820F-EU/MEU
Outside lever is unlocked when power is applied and locked when power is removed. Lockset will lock in the event of a power failure. If prefer this function, specify model no. 8820S-EU/MEU or 8820F-EU/MEU.
*Note: Some Fire codes will require "Fail Safe" operation to stairwell doors. Be sure to specify the correct operation for your application.
Motor Type
The Electric Mortise Lock Exit Device may have the following additional functions if required.
1. REX (Request to Exit)
If need to know whether the exit device is operated from the inside, use REX option to the security system for monitoring the push bar.
2. LM (Latch Monitor)
If need to know whether the latch is extended or retracted, use the security systems to monitor the latch, to signal the door opening or not.
Note: The REX or LM switch option is a signaling switch only; it should not be used to control a load.
