Gateman V20 (also known as the ) is a vertical rim-type digital door lock designed for convenience and security. Below are the key operating instructions and features summarized from the BT Security Manuel and other technical guides. 🔑 Security Code Registration To set or change your PIN code (4–12 digits): Open the battery cover on the interior unit. "I" button (Registration button). Activate the keypad on the exterior unit by touching it with your palm. Enter your new PIN code (Do not use "I" button again to finish. A "pi-bi-bing" sound confirms success. BT Security 🎴 Card Key Registration Open the battery cover and press the "I" button Touch the card keys one by one to the card reader on the front panel. "I" button to complete the process.
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