Custom GSM Control Systems: Engineering for Accountability
The Challenge: Remote Management in the Pre-IoT Era From 2006 to 2011, during the rise of mobile connectivity, there was a critical need for simple, fail-safe remote control of large-scale infrastructure. Businesses needed a way to reset power, disable leased equipment (like elevators), or monitor scientific sensors in remote maritime locations without expensive satellite links. The Solution: The GSM Switch Series I developed a line of independent GSM-controlled devices from scratch — from initial concept and PCB design to firmware development and final sales. These devices were built to do one thing perfectly: execute commands via SMS with 100% reliability. ...