Adams Rite 4550R-01-119 Lever Operator For MS1850 offers a sophisticated solution for unlocking MS Deadlocks with ease. Designed with a flat lever that features a return mechanism, this lever operator requires only approximately three pounds of downward force to unlock, providing a user-friendly experience. The spring-loaded lever automatically returns to the horizontal position, while the integrated LOCKED/OPEN indicator clearly signals the lock’s status. Constructed from durable aluminum, the lever measures 3 inches long, ensuring a comfortable grip for effortless locking and unlocking. The 4550 lever is compatible with various MS pivoted bolt deadlocks, including popular models such as MS1850S and MS1950, though it is not suitable for 7/8-inch backset locks. Installation is straightforward, allowing for replacement of existing key cylinders or thumbturns. Each unit comes individually boxed with comprehensive installation instructions, mounting screws, and drive pins to accommodate both single point and threshold bolt-equipped locks. With a sleek satin black finish, the 4550R-01-119 adds a modern touch to any commercial space. Whether for new installations or upgrades, this lever operator is a reliable choice for enhanced access control and security.

Lever Operator For MS1850

Lever Trim for MS Deadlock, Flat Lever with Return, LOCKED/OPEN Indicator, RH or RHR,Satin Black Paint

Easy unlocking of any MS Deadlock by approximately 3 lbs. downward force on a 3 In. lever. Lever is spring loaded to horizontal, relocks with upward motion. Indicator signals lock status. Can be installed in place of existing key cylinder or cylinder type thumbturn on inside of door. 4550 Deadlock Lever not compatible with 7/8 In. backset locks. Turn lever downward 90 Deg. to unlock. When released, lever returns to horizontal. Turn lever upward 90 Deg. to relock. Key operation from outside is not affected. Clutching action prevents damage to internal components. compatible with any MS pivoted bolt deadlock including "Schoolhouse" versions can be fitted with the 4550 including MS1850S, MS1950, MS1837, etc. Derivative units such as 1870, 1870HM, or 1877 flushbolts (bolt into threshold) are also operable by the 4550 lever. Not compatible with MS+1890 or 2190 Deadlock/Latch or with 7/8 In. backset locks. Individually boxed with installation instructions, mounting screws, and drive pins for both single point and threshold bolt-equipped locks.

Easily unlocks an MS®Deadlock with approximately three pounds of downward force.

Lever is spring loaded to horizontal, relocks with upward motion. Indicator signals lock status. Can be installed in place of existing key cylinder or cylinder type thumbturn on inside of door. 4550 Deadlock Lever not compatible with 7/8” backset locks.

• Housing: Aluminum casting is 1-3/8” wide x 7-1/2” long x 1” deep.
• Lever: 3” long aluminum with end-return design offers comfortable grip to lock or unlock.
• Indicator: Words “LOCKED” in red letters or “OPEN” in black letters appear on white background when lock is thrown or retracted. Indicator is driven by lock bolt itself.
• Stop Clearance: Lever housing projects 11/16” forward of cylinder backset centerline. Depending on height of door stop and width of door/jamb gap, it may be necessary to modify the stop to clear the housing. For fin type stops, this is easily accomplished. Hollow stops may preclude use of lever.
• Compatible Deadlocks: Any MS® pivoted bolt deadlock including “Schoolhouse” versions can be fitted with the 4550 including MS1850S, MS1950, MS1837, etc. Derivative units such as 1870, 1870HM, or 1877 flushbolts (bolt into threshold) are also operable by the 4550 lever. Not compatible with MS+1890 Deadlock/Latch or with 7/8” backset locks.
• Options: Available in three finishes to match anodized aluminum finishes. Can be ordered for left or right hand door, but is easily reconfigured in the field to accommodate either door swing.
• Standard Package: Individually boxed with installation instructions, mounting screws, and drive pins for both single point and threshold bolt-equipped locks. Shipping weight: 1 lb.

Resources

• 4550 MS Deadlock Lever Installation Instructions