Securitron MUNL-24 User Manual
Securitron For Home
Securitron Magnalock Corp.
www.securitron.com
ASSA ABLOY, the global leader
Tel
800.624.5625
in door opening solutions
© Copyright, 2011, all rights reserved
PN# 500-18800
Page 1
Rev. E, 11/11
SECURITRON MODEL MUNL-12, MUNL-24 MORTISE UNLATCH
INSTALLATION AND OPERATING INSTRUCTIONS
1. DESCRIPTION
Securitron’s Mortise UnLatch is a revolutionary new type of electric strike which eliminates the
necessity to perform a routing operation on the door frame for installation. The motor
driven Mortise UnLatch also presents a fully concealed appearance on the door which not
only enhances architectural appeal but improves security over a conventional electric strike as
an intruder is less able to determine the type of security device present on the door. The
Mortise UnLatch functions with all North American mortise locks and includes a latch
status output which reports when the door is in latched (secure) condition or is open.
Product Specifications are: Input Voltages: 12 VDC (MUNL-12), +20%, -10%. 24 VDC
(MUNL-24), +20%, -10%. Current: At rest: 40 mA (either voltage). When operating- 4 Amp
input surge @ 12 VDC; 2 Amp input surge @24 VDC for 100 milliseconds and 600 mA @ 12 VDC
or 300 mA @ 24 VDC during motor movement. Operating Temperature: -10 to 125 F.
FIG 1: MORTISE UNLATCH DIMENSIONS (INCHES)
1.25
1.25
1.88
3.50
3.38
RECOMMENDED TOOLS
4.88
SPRINGLATCH
PLUNGER
DEADLATCH
FINGERS
MEDIUM + SMALL PHILLIPS DRIVER
MEDIUM SLOTTED DRIVER
CHISEL, 5/64 ALLEN WRENCH
WIRE CUTTER/STRIPPER
VOLT/OHM METER
CRIMP CONNECTORS
CRIMP PLIERS
2. PHYSICAL INSTALLATION
2.1 SURVEY
The installer must first be sure that the latch is of the mortise type (see the drawing to the
right.) A mortise lock (or latch) includes a square shaped springlatch
and a “pin” called the deadlatch pin or guard bolt which may be
positioned either above or below the springlatch. Most mortise panic
bar latches are also perfectly compatible with the MUNL. Note,
however, that if the mortise lock assembly includes a dead bolt,
the dead bolt will not be operable The most common alternate type
of latch in use in North America is called cylindrical, tubular or
bored. The standard UnLatch (model numbers UNL-12 and UNL-24)
is designed for this alternate type of latch. Securitron does not offer an
UnLatch solution for a rim latch (rim latches are on the surface of the
door rather than being mortised into the middle of the door).
Deadlatch Pin
Springlatch