100% Especially suitable for wooden and metal doors. It is made from and high aluminium alloy material, for use. With no external interference, making it more stable and . Has 0, 3, 6 seconds time delay adjustable.<br><br>Product Specifications Working Voltage: DC12V Lock Mode: Magnetic induction Dimension: 150 x 34 x 28 mm Lock Mode: Magnetic induction Working Current: star-up: 1.2A, operating: 0.25A Specifications: Unlock when power off Color: silver Material: aluminum alloy Different batches and different codes not affect the use<br><br>Package Contents: 1 x main lock 1 x secondary lock<br><br>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 +/- 1-3cm.