SimpliSafe Base Station (Gen 3) is offline or unavailable

The checks in more detail

The article notes the error can also come from a wifi outage or a recent wifi change, and that the Base Station should sit in a central open place, elevated at least three feet off the floor on a non-dense surface, ideally glass or wood. Restart the router and any mesh points, and check other devices work on the network. SimpliSafe requires 2.4 GHz wifi. If the wifi name or password changed, update the Base Station first, as SimpliSafe's changing wifi article says. The Base Station switches automatically to its built-in network backup if wifi fails and to battery power if the electricity fails.

If it stays offline, contact SimpliSafe support, especially before replacing anything. Photograph the Keypad message and the Base Station light when you contact support, since the pair tells them the state quickly. If the Base Station drops only at night, check for a scheduled router restart. Contact support with the model, firmware version and error message ready. If the Base Station shows offline only when the cellular backup is active, the wifi side is the fault, so fix the router before you suspect the Base Station.

SimpliSafe's article notes the Trouble Signal and light appear when a component is offline, so if the Keypad chimes every minute the app's System Health messages will name which device or connection is at fault, and starting there saves guessing. Contact support before replacing hardware, since they can often see the Base Station's connection state and tell you whether the fault is the wifi, the cellular link or the unit. Compare the Keypad's message with the app's, since the Keypad announces problems such as a lost connection aloud, and hearing what it says, rather than reading a summary, often names the cause in one phrase and points at the right article.