 When it comes to your safety, every second counts. That's why at ESI's local central monitoring station, we're always on alert. Our expert team monitors your security system 24-7, ready to respond at the first sign of trouble. With lightning-fast response times, ESI ensures help is on the way when you need it most. Visit us online at GetESI.com or call now for a free security consultation. ESI Security. Protecting what matters most. State license number EF87.