The plug is suitable for over 90% of locks in the market, so replacing old locks with our locks is very simple and convenient. The lock is easy to install, and the surface of the lock can cover most of the door openings excavated from old locks. High appearance, exquisite appearance, durable and durable under pressure, wear-resistant and scratch resistant, with a long-lasting shine. Internal fixing bolts. Internal handle retraction latch and fixing bolt. When the battery is running low, the system will display a message reminding you to replace the battery in good time., Manufacturer: YTBHSHXZ