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On the model TM 1 A, the protection against burglary is ensured by a self-locking worm gear in the motor of the garage door opener. |
| On the models TM S + TM 2, the best possible protection is achieved by a door lock with a steel arm at the zero point (see fig. left) |
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| The remote controls and the radio coding switch functions on the basis of a "unique address", which is comparable with a fingerprint. This prevents unauthorized access. |
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