1Four unlocking mode: Remote control unlocking, Manual rotating unlocking, Indoor one-key unlocking, Mechanical emergency unlocking, more convenient to use, ensure your home security 2Independent dual electronic drive system, imported dual motor, more reliable 3Simple and convenient installation: equipped with installation accessories, very practical 4Low voltage alarm: Remind you to change batteries 5Power saving control mode, low power consumption, 4 * AA batteries (Not included) can about 1 year work Features: Four unlocking mode: Remote control unlocking, Manual rotating unlocking, Indoor one-key unlocking, Mechanical emergency unlocking, more convenient to use, ensure your home security. Independent dual electronic drive system, imported dual motor, more reliable. Simple and convenient installation: equipped with installation accessories, very practical.Low voltage alarm: Remind you to change batteries. Beautiful appearance and arc design, the lock body is relatively thin.Power saving control mode, low power consumption, 4 * AA batteries (Not included) can about 1 year work.An ideal equipment for home, offices, hotels, apartments, restaurants, dormitories and so on.Specification: Condition: 100% Material: Zinc alloyColor: As Pictures ShownFour unlocking mode: Remote control unlocking, Manual rotating unlocking, Indoor one-key unlocking, Mechanical emergency unlockingPower supply: 4 * AA batteries (Not included) Battery service life: lasts for one yearInstallation method: screw / rivet installation, adhesive paperRemote control: 4 in this package, max match up to 32pcsRemote control battery: 2032 large button batteryOperating temperature: -20 to 60 Operating humidity: 5%-60% (no frost condition)Item Size: As Pictures ShownPackage Weight: Approx. 900 g Package Include: 1 * Lock (Main Body and Lock Tongue) 1 * Antenna 4 * Remote Controller 4 * Bags of Screws and accessories1 * Manual Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.