1200-D Retrofit Deadlatch replaces Southern 3/4

Latch retracts by momentary switch action or latch may remain retracted by continuous duty solenoid.

Mechanical Holdback (Standard)

Once unlocked, the latchbolt is held retracted until the door opens. The latchbolt then projects and allows the door to be slammed and relocked.

Non-Holdback (Optional)

Latchbolt retracts only as long as power is applied to the solenoid.

Latch retracts by momentary switch action or latch may remain retracted by continuous duty motor.

Mechanical Holdback (Standard)

Once unlocked, the latchbolt is held retracted until the door opens. The latchbolt then projects and allows the door to be slammed and relocked.

Non-Holdback (Optional)

Latchbolt retracts only through full cycle operation.

Latch retracts and remains retracted by first position of two-position switch. Latch projects for relocking by second position of two-position switch.

Non-Holdback (Standard)

Latchbolt retracts only through the full cycle operation or is held back through half cycle operation.

Mechanical Holdback (Optional)

Once unlocked, the latchbolt is held retracted until the door opens. The latchbolt then projects and allows the door to be slammed and relocked.

The 1200E deadlatch is solenoid operated lock. When the door in a locked closed condition, the latchbolt is deadlocked preventing the latchbolt from being retracted. Once the solenoid is energized, the deadlatch is lifted and the latchbolt is allowed to retract, unlocking the lock.

The deadlock indicator switch provides monitoring of the deadlocked condition as well as the full projection of the latchbolt.

When ordering, the lock needs to be specified as having “Mechanical Holdback," which allows the bolt to be retracted until the door opens, or specified as “Non-Holdback," which only holds the latchbolt back as long as the solenoid is energized.

The lock may be unlocked for an extended period of time by use of a maintained-contact switch.

The 1200M deadlatch is motor operated lock. When the door in a locked closed condition, the latchbolt is deadlocked preventing the latchbolt from being retracted. Once the motor is energized, the deadlatch is lifted and the latchbolt is allowed to retract, unlocking the lock.

The motor is equipped with a motor switch that allows for a full cycle operation. Full cycle (M) operation uses a momentary contact switch to rotate the motor 360 degrees and unlock the lock. Once the door opens, the latch will project and the lock will return to a locked condition once the door is closed. Full cycle typically uses the “Mechanical Holdback" feature as described below.

The deadlock indicator switch provides monitoring of the deadlocked condition as well as the full projection of the latchbolt.

When ordering, the full cycle lock is usually specified as having “Mechanical Holdback," which allows the bolt to be retracted until the door opens.

The 1200MC deadlatch is motor operated lock. When the door in a locked closed condition, the latchbolt is deadlocked preventing the latchbolt from being retracted. Once the motor is energized, the deadlatch is lifted and the latchbolt is allowed to retract, unlocking the lock.

The motor is equipped with a motor switch that allows for a half cycle operation. The half cycle (MC) operation uses a two position switch. The 1st switch position rotates the motor half way and unlocks the lock. The lock will remain unlocked until the 2nd switch position rotates the lock and returns to a locked condition with the latch projected, once the door is closed. Half cycle typically uses “Non-Holdback" as described below.

The deadlock indicator switch provides monitoring of the deadlocked condition as well as the full projection of the latchbolt.

The half cycle lock is usually specified as “Non-Holdback," which holds the bolt back only during the half cycle position.