How to Make a Smartphone Door Lock

gsm door opener, mobeye call-key, smartphone door lock

Mobeye Call-Key MCK100 is a user friendly and secure access control system for buildings with one door, fences or gates and for situations with changing access rights. Authorised people can unlock the door with their smartphone, by simply calling the door lock. Via the incoming call, the relay output will switch and the door or port is opened.

By registering the Call-Key in the Mobeye Internet Portal with the included Mobeye SIM card authorisations are possible within a time frame (day, time, time window).

Security made easy!

Mobeye Call-Key: How to make a smartphone door lock

This is what you need:

  • Mobeye Call-Key.
  • SIM card.
  • Electronic door lock.

Time needed: 15 minutes.


To get started with the Mobeye Call-Key MCK100 and make a smartphone connected door lock the following easy steps are needed. Please consult the included manual for specific instructions.

  1. Place the SIM card.

    To use the Mobeye Call-Key a SIM card from any network is needed. The PIN code security needs to be disabled or ‘0000’. Or: activate the Mobeye SIM card and link your device to the Mobeye Internet Portal.

  2. Connect an electronic lock to the output.

    The Mobeye Call-Key can be connected to all electronic locks and strikes that work via a pulse or switch command. Connect the electronic door lock to the output 1. This is a relay output. The maximum load is 2A/30V.

  3. Connect the power supply.

    Connect the external power adapter to the power input of the Mobeye Call-Key.

  4. Optional: Insert the four batteries.

    Optionally the 4 batteries (4 * CR123/CR123A) can be placed.

  5. Close the Mobeye Call-Key using the 4 screws.

    Close the device and secure with the four screws.

  6. Program a phone number as administrator.

    You need to program at least one phone number, which will be set as ‘administrator number’. The administrator will receive system messages such as test messages, low battery messages or notifications about an activated input. Without administrator number, the unit will not work.

  7. Program at least one phone number as authorised number.

    As prerequisite for opening a door, the ‘calling telephone numbers’ need to be authorised. In the stand-alone Mobeye Call-Key a maximum of fifty numbers can be authorised via SMS command. Each new number takes the first free position.

  8. Open the lock.

    The door can be opened by authorised numbers. This can be done by incoming call or SMS command. Please note, the number recognition of the authorised number must be switched on.

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