Digital door locks are common in South Korean apartments and officetels, where a short beep and a locking click replace a traditional key turn, and that everyday sound has become shorthand for home security in short videos. This clip is a brief, isolated recording of that lock noise, shared on soundboards for creators who need a realistic door sound without filming one themselves. It stays useful because it is instantly recognisable, language-free, and short enough to drop into edits about moving in, changing a passcode, or locking up for the night.