Shipping is free, excluding Hokkaido and Okinawa Prefecture. We have many other products as well. Please take a look if you like (**). #HD Products [New, Unused] [Special Features] -- Smart lock, low voltage lock protection function and alarm sound prompt function: When the battery voltage drops and power is consumed, the remote controller cannot lock the door (the remote controller cannot lock, and cannot generate 4 alarm sounds), but the remote controller can unlock normally, so you need to replace the backup battery in time. [Remote Control System] -- Remote control with digital conversation system. It cannot be decoded or duplicated. Induction lock: After unlocking with the remote control and closing the door, it will lock after 3 seconds. (If not closed, no lock.) [Special Material Build] -- Long life, 300,000 lock operations, no wear. Rust-proof battery box, the spring is made of special durable materials during use. The lock tongue and main parts are made of stainless steel and will not fade. Power-saving control mode, low power consumption, can work for about 1 year with 4 * AA batteries. [Perfect Design] -- This intelligent door lock can be easily installed without plugging in. Beautiful appearance and arc design, the lock body is relatively thin. Easy and firm installation with external mounting plate. [Mechanical Smart Lock] -- Door lock, remote control unlock, explosion-proof lock, mechanical unlock. Innovative unlocking and locking prompt tone.