Fixed Price: $1,000 - $5,000
| Posted: 19h, 24m ago | Ends: 14d, 4h |
Research Project for Electronic Engineer This product has various names in the internet and various brands too.. Im not concerned with the brand, just learning the technology in general.. 1. Apartment directory call box 2. Multi-Family Door Entry 3. Telephone entry systems Research Project Request: This older technology unlocks the front door to many buildings etc.. From what little I understand, it sends a Phone "Tone" single to the electronic door lock mechanism that then unlocks the door when the person that is being buzzed "Called" on their phone is rang. When that person hits the correct button to unlock the door (Any button can be programmed to unlock) as long as its programmed into the box unit. Again, when the correct tone is recognized the door unlocks. My Goal To have enough research so that I can understand how technology works and furthermore, use a cell phone to send the (same tone) correct single without the old brain box. Perhaps make and mobile ph...