Product Material: Shell is made of sheet metal, and the internal parts are precision cast from carbon steel. Working Mode: (locks when the door is closed when powered off, unlocking is triggered when powered on) Mechanical Lifespan: Under design load conditions, more than 500,000 times Surface Treatment: Design load plating electrophoretic paint (neutral smoke test for more than 500 hours) Ambient Temperature: This product is suitable for high temperature +60 degrees, low temperature -40 degrees ambient temperature Safety: The lock hook can withstand 150KG tensile force without obvious permanent deformation; it has anti-vibration and anti-pry performance Product Installation: The product is small in size, easy to install, no left and right, positive and negative; and a mechanical emergency unlocking position is reserved Electromagnet Lifespan: More than 1,000,000 under rated working conditions Self-elastic Design: Adjustable elasticity, suitable for self-elastic doors weighing 0.5-4KG Color: Black Material: Metal Package Content: 2 sets x Electromagnetic Lock, Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.