Best protection I've found for my SDS100 and SDS200, from loss or theft, is to leave them at home, under the watchful eye of a ferocious dog and a more-than-adequate home security system. The SDS200 runs 24/7, while connected to my router and my homemade base antenna. Nearby laptop runs Pro Scan 24/7. Using the Pro Scan web server, I can listen to SDS200 any time, almost anywhere, using my cell phone. The quick keys of the SDS100/200 work extraordinarily well through the web server, so I can easily switch from local, one county coverage, to a coverage area of six southeast Tennessee counties. Cell phone connects easily to my car's Bluetooth, for mobile monitoring.