Introducing the High Strength 1200Ibs Electromagnetic Lock JS-500D, designed for superior security with a 600lbs holding force. Featuring dual voltage (12V/24V), MOV surge protection, and fail-safe operation, it's perfect for wooden, glass, metal, and fireproof doors. With no mechanical failure and instant unlock when power is off, it ensures reliability and safety. Trusted globally in airports, banks, and smart buildings.