LD Atlas allows you to communicate via Bluetooth or WiFi with Larson Davis Spartan Noise Dosimeters - Models 730 and 730IS, SoundAdvisor Sound Level Meters - Model 831C, Human Vibration Meters - Model HVM200, Spartan 821/721, and SoundExpert 821/721. You can view meter status, calibrate meters, make measurements, review measurement data, create and view PDF reports, and analyze data.