The system centers on a cellular control unit with its own SIM card, wired to the gate operator’s relay input. When an approved caller dials the unit’s number, the controller recognizes the caller ID, triggers the relay, and the operator runs its open cycle. No Wi-Fi, no landline, and no broadband connection is involved at any point in that chain.
Before installation, the local installer checks cell signal strength at the gate post, confirms the control board has a compatible relay input, and routes antenna placement for the best reception. A cloud-managed access list lets the property owner add or remove approved numbers remotely, useful for granting temporary access to contractors or emergency vehicles without issuing a physical remote.
Cellular access is distinct from a remote transmitter: remotes can be lost or copied, while a caller ID whitelist is managed from a phone. For long mountain estate driveways where handing out remotes is impractical, the phone-based trigger is the more reliable daily-use solution. Multi-entry programming supports separate codes or numbers for different users.