arkel arl-200s
Hi,
i see that you have not the idea of the electronic industry, i try to explain.
The controller, if you see as hardware, and manufacturing is the smallest problem. Many company in Turkey, in Bulgaria or Taiwan may manufacture this for you. If you want this can make form yourself, or can rent the people, 2-3 people is enough for 100 pcs per month. And if you use only conventinal component, or SMT with a not very small grid, you need only the soldering station.
The PCB in all case must order to a manufacture, but this is not problem.
All this you can make very easy, for this you not need to have very good knowledges in electronics.
But this is the easy part, actually this is not easy, but you can do it. For the schematic and PCB project, and software you must have a good knowledges in electronic,in automation and microcontrolers. The better choice is finding the company that develop user electronics, and work with them. The price for design can be very different in different companyes, for example, if i must design this controller the price will be between 5.000 and 10.000 $ depend of your needs, this is the price with all right over the projects. I know that have company that will make the project for 1000 or 2000$. When yo choice the company, you must be sure that product will be suitable for production, many company can create the prototype, but very often this is only prototype not suitable for mass production, without reliability analysis EMC compabilities etc.
The custom electronics, in this area is a expensive, this is not garage door controller or lighting controller, from this controller can be depend the human life, you must think about this.