Development of an electronic lock on the refrigerator

Good afternoon!
Offering additional earnings for a specialist in the development of electronic locks. It is necessary to develop an electronic magnetic lock on the refrigerator. The lock should be attached to two cavities (door and wall of the refrigerator) and have locking functions by means of 1) Timer, 2 (Code).
Approximate appearance attached in the attached file.

Assistance in the development of this project, the production of all documentation and subsequent support during implementation in production.
Time and price estimates for your services.