Tempo Communications makes all kinds of irrigation troubleshooting and testing tools for contractors and technicians. Some of their most popular products include wire and valve locators, underground cable locators, irrigation system testers, multimeters, milliamp clamp meters, and complete technician tool kits. These tools can help locate buried sprinkler wires and valves, identify breaks or faults, test controllers and solenoids, and diagnose electrical problems in irrigation systems.