Outdoor waterproof and antifreeze All you need to do is remove the old lock and replace it with a fingerprint lock.No drilling is required; using a is a simple and straightforward process Accurate fingerprint recognition technology allows you to open the just . Send time-limited passwords remotely via mobile app: limited time/permanent/single/recurring.Tenants no longer need to run around to view properties, rent them out, or forget passwords Anti-peeping password You can unlock the lock by entering any number before and after the correct password; there's no need to deliberately conceal it, Weight: 2.645547144 pounds, Manufacturer: Ehwisbe