Electromagnetic Lock SK-280S – 280KG 600LBS Double Door Fail-Secure Magnetic Lock

280KG Double Door Electromagnetic Lock for Access Control

The SK-280S is a 280kg / 600lbs electromagnetic lock designed for double doors. Its 500mm extra-long body covers both door leaves evenly, runs on 12V DC, and unlocks automatically on power loss for fail-safe exit.

Key Features

• 280kg / 600lbs holding force – verified with pull force tests.
• Double door design – 500mm body covers wide double-door openings.
• Fail-safe operation – unlocks automatically on power cut for safe egress.
• 5-wire signal feedback – door status and alarm signal output.
• Residual magnetism protection – no magnetic loss over time.
• Center-grooved dual PCB – series connection for convenient single-side wiring.
• Anti-rust & waterproof – sealed design resists water damage.
• Magnesium-aluminum alloy – lightweight, corrosion-resistant and durable.

Specifications

Model	SK-280S
Holding force	280kg / 600lbs
Working mode	Fail-safe (unlocks on power loss)
Power	DC 12V
Signal	5-wire feedback with alarm signal
Material	Magnesium-aluminum alloy
Dimension	500 x 48 x 28 mm
Finish	Anti-rust, sandblasted
Applications	Glass, wood, fire-rated, metal double doors

Applications

The SK-280S suits double-door entrances in offices, commercial buildings, hospitals and fire exits. As an OEM/ODM manufacturer, we supply it with custom logo and packaging options for distributors and project buyers worldwide.

Contact us for bulk pricing, samples or OEM/ODM customization.