Dahua AC Single Door Magnetic Lock ASF280A

NC lock = Normally Closed

No power →  unlocked

Power ON →  locks

NC = Needs power to stay closed

• 280KG Anti-pull.
• Built-in reverse current protection device(MOV).
• Aluminum shell with high strength alloy material.
• Electromagnetic suction work completely, there is no mechanical failure.
• Can be set DC12V or DC24V.
• The residual magnetic design proof, wear materials.
• Double lock body insulation treatment.
• Supports door detector signal feedback.