Product material: The shell is formed by metal sheet and the internal parts are precision cast from carbon steel. Working mode: (locking when the door is closed when powered off, unlocking is triggered when powered on). Mechanical life: 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 150 kg of pulling force without obvious permanent deformation; it has anti-vibration and anti-prying performance. Product installation: The product is small in size, easy to install, no left and right, positive and negative; and a mechanical emergency unlock position is reserved. Electromagnetic life: more than 1,000,000 under rated working conditions. Self-elastic design: adjustable elasticity, suitable for self-elastic doors weighing 0.5-4 kg. Color: black. Material: Metal. Package contents: 2 sets x Electromagnetic lock. Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3 cm.