For All Doorking Brand Products OP-KEY - Will work with Cylinder # N16058BDxSFx2K ( part # 4001-035 )
All 1812 series - 1810 - 1803 -1808 - 1802 - 1833 - 1834 - 1837, All Keypad 1803 - 1806 For Gate Openers Model: 6050 - 6100 - 6300 - 9050 - 9100 - 9150 - 9310- all 9200 series - 1601-080
Each key is tested by professional engineers to ensure product usability
Note: Some keys can be inserted on both sides, but only one side can be turned (it is related to the design of the DK key slot and will not affect use)