Two unlocking methods: support password unlocking and APP unlocking (Tuya or TT lock optional), providing a flexible use experience IP65 waterproof rating: has excellent waterproof performance, suitable for outdoor use, ensuring safe storage of keys in various weather conditions Large storage capacity: can accommodate up to 6 keys, meeting the spare key storage needs of home and office places Long-lasting battery use: powered by 3 AAA batteries, with a standby time of up to 365 days, reducing the trouble of frequent battery replacement Emergency power supply: equipped with emergency power supply function to prevent smooth unlocking when the battery is exhausted, ensuring safe use