Wide compatibility: The key can be applied to all Doorking systems produced between 1997 and 2020, including keypad input system, telephone access control system, sliding door opener, swing door opener, etc., covering a variety of models and series under the Doorking brand, such as 1812 series, 1803 series, 6050-6300 series, 9050-9310 series and all 9200 series, etc., which greatly facilitates the user's choice and use.
Ease of maintenance: Due to the versatility and durability of the key, it will also be more convenient and faster for users to maintain and replace. This not only saves the user's time and effort, but also reduces maintenance costs.