{"id":3478,"date":"2024-10-02T12:28:44","date_gmt":"2024-10-02T10:28:44","guid":{"rendered":"http:\/\/www.ojmar.com\/?page_id=3478"},"modified":"2025-05-22T01:20:45","modified_gmt":"2025-05-21T23:20:45","slug":"ots-20","status":"publish","type":"page","link":"https:\/\/ojmar.com\/en\/after-sales-service-support\/electronic-locks\/ots-20\/","title":{"rendered":"OTS 20"},"content":{"rendered":"\t\t
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Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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OTS 20 (OTS Advance)<\/small><\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"OTS\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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FAQ <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/rect><\/clipPath><\/defs><\/polyline><\/g><\/g><\/g><\/svg><\/span>\n\t\t\t<\/rect><\/clipPath><\/defs><\/polyline><\/g><\/g><\/g><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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How does the free lock work? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Each chip used to operate the lock (regardless of its format: wristband, card, fob…) has an identifier number called UID. In turn, each lock is programmed with its corresponding number.<\/span><\/p>

When a lock is locked using the chip, 2 things happen: the lock sends it data and the chip data to the Gateway. This memorises them, creating a link between the two elements. This is why a chip programmed to operate with only one lock would no longer be able to lock any other lock, as the chip is occupied. Also, the lock could not be opened with any other chip, as it remembers the UID that locked it (Lock occupied).<\/span><\/p>

When the opening is done, the chip stops remembering the already opened lock (it is released) and would be ready to close any other free locker. The lock also stops remembering the chip\u2019s UID, leaving it free to be used by any other chip. This breaks the link correctly at both ends.<\/span><\/p>

Note, however, that it is not the same to talk about free and occupied (referring to the memory of the lock)\u00a0 <\/span>or open and closed (refers to the physical state of the lock). There is a case where the lock can be open and occupied (see FAQ Why does no wristband\/card close the lock?).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What is the functionality of the master key (Red) and Service (Green)? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Master key (Red):<\/b> Once this key is used, the lock is unlocked and frees the last used card\/wristband\u2019s memory for another user. It can only be used to open locks. Please note that if you use the master key to open a lock, the bracelet will be occupied, and you will have to re-record it.<\/span><\/p>

Service key (Green):<\/b> Used to check the lock mechanically. It can open and close any lock in the installation, but it does not release the memory of the last wristband used, so only the last user who closed the lock will be able to open it after use. This key cannot be used to leave the lock open as only the user who locked the lock will be able to use this locker.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Why can\u2019t my card\/wristband open the lock? <\/div><\/span>\n\t\t\t\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Pass the service key (green) to check the belongings inside:<\/span><\/p>