Kastle Systems Makes Strategic Investment in i2G Systems, Strengthening Leadership in Serving High-Security Industries and High-Value, Large Scale Facilities" Read More About the Partnership Here: https://www.kastle.com/kastle-systems-makes-strategic-investment-in-i2g-systems-strengthening-leadership-in-serving-high-security-industries-and-high-value-large-scale-facilities/ . The Electronic Security Service Technician installs, services, troubleshoots, and maintains electronic security systems including video surveillance, access control, intrusion detection, alarms, and related low‑voltage equipment.