MA531 - Apartment corridor lock

• Latch bolt operated by knob/lever from either side, except when outside knob/lever is made inoperative by buttons in face.
• Dead bolt operated by key outside or turn inside. Key outside operates both bolts.
• Operating inside knob/lever retracts both bolts and outside remains locked.
• Latch bolt is deadlocked when outside knob/lever is made inoperative or when the dead bolt is projected.
• When dead bolt is retracted, knob/lever is unlocked by buttons in face. Inside knob/lever is always free for immediate egress.