The EcoTracker from EcoSense bundles four radon detectors into a compact system which allows professionals to rapidly and easily measure multiple locations at the same time. Measuring radon levels at the exact same time allows easy identification of radon variation in homes, schools, daycare centers, or commercial buildings. Each of the detectors uses Bluetooth Low Energy (BLE) to broadcast its data to an app installed on the phone or tabelt. EcoTrackers integrate Ecosense's patented ion chamber radon sensor, which offers industry leading 30 CPH/pCI/L (counts per hour per pCi per liter) sensitivity. Included in the box: 4x EcoTracker Detectors; 4x 12V Power Adapters; 4x Step Up Cables; 4x DC Extension Cables; Product Quality Certificate; User Guide