Shop Testing Materials at GeoArm Security. Discover professional testing materials and diagnostic tools designed to help install, inspect, maintain, and verify the proper operation of compatible alarm systems, fire alarm equipment, security sensors, communicators, and life safety devices. Browse testing supplies and service accessories for residential and commercial security systems from leading manufacturers. Testing materials support GeoArm 24/7 professional UL-listed central station monitoring or DIY self-monitoring with no long-term contract.