Wall Mount Electromagnetic Door Holder & Suction Lock For Fire Doors. Introducing the Asia-Teco Extended Wall Mount Door Holder, Designed for Optimal Performance on Both Single and Double Smokeproof Doors. This Electromagnetic Lock is Engineered for Low Power Consumption, Making It Environmentally Friendly and Durable. The Professional Anti-residual Magnetism Design Ensures Maximum Security by Automatically Releasing Fire Doors During Fire Alarms. Featuring an Adjustable Voltage of 12/24VDC and Built-in MOV for Reverse Current Protection, This Model Ensures Reliable Functionality. An Optional Manual Door Release Button is Included for Testing Convenience. With Sturdy Zinc and High-temperature Finishes, It's Built to Withstand Tough Conditions. Key Features: - Current Draw: 12V/140mA or 24V/70mA - Dimensions: 80x80x105mm - Finishes: Zinc Armature; High-temperature Paint and Zinc Shell - Holding Force: 50kg (110 Lbs) - Suitable Conditions: 0~90% Relative Humidity; Surface Temp ≤ +20℃ - Voltage: 12/24VDC +/- 10%(Adjustable) - Weight: 1.0kg - Type: Long Type Wall Mount Holder - Optional Feature: Manual Door Release Button Ensure Your Doors Are Secured with Asia-Teco's Reliable and Efficient Door Holding Solution..