Product material: The shell is made of metal plate, and the internal parts are precision-cast carbon steel Working mode: Locking when the door is closed and power is off; unlocking is triggered when power is on Mechanical life: Over 500,000 cycles under design load conditions Surface treatment: Electrophoretic paint plating (neutral salt spray test for over 500 hours) Ambient temperature: Suitable for operating temperatures from -40C to +60C Safety: The lock hook can withstand a 150 kg pulling force without visible permanent deformation; features anti-vibration and anti-pry performance Product installation: Compact design, easy to install, no left/right or polarity restrictions; includes a mechanical emergency unlocking feature Electromagnet life: Over 1,000,000 cycles under rated working conditions Self-elastic design: Adjustable elasticity, suitable for self-closing doors weighing 0.54 kg Color: Black Material: Metal Package Contents: 2 x Electromagnetic lock Note: Light reflection and display differences may cause slight color variation between the image and actual item. Measurement error allowance is +/- 13 cm