1. A D T 1524 10th Ave N, Humboldt, IA 50548 Coordinate: 42.7316,-94.23198 Phone: (800) 207-3994
2. A D T Security Services 30 6th St N, Humboldt, IA 50548 Coordinate: 42.72195,-94.21629 Phone: (515) 902-0044