# Map Dot Disappeared **URL:** \ **Category:** Sensors\ **Created:** [January 22, 2023, 12:14am UTC](https://community.purpleair.com/t/map-dot-disappeared/3364 "2023-01-22T00:14:45Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![dwhitemv](https://sea2.discourse-cdn.com/flex020/user_avatar/community.purpleair.com/dwhitemv/32/1508_2.png) [@dwhitemv](https://community.purpleair.com/u/dwhitemv)\ **Post date:** [January 23, 2023, 8:01pm UTC](https://community.purpleair.com/t/map-dot-disappeared/3364/2 "2023-01-23T20:01:31Z")
Check the map settings. If the sensor’s dropped offline and you haven’t checked the map in a while to notice, the grey dot will disappear after the “Reporting or modified within” time. You might also check if the sensor’s gone into setup mode again (the PurpleAir-XXXXX network is available on WiFI), which indicates that it’s lost its ability to connect to your WiFi network. See this reply for details: > [@Stopped appearing on map, cannot connect via wifi or hotspot](https://community.purpleair.com/t/stopped-appearing-on-map-cannot-connect-via-wifi-or-hotspot/970/6): > > Here’s a helpfull answer from Purple Air staff : "The sensor will appear gray on the map if it is disconnected from the Wi-Fi. It will disconnect from the Wi-Fi if there is an issue with the Wi-Fi connection or it loses power. So, if the sensor is gray, it could be any number of things. Such as the power supply not receiving power, the power cord becoming faulty or disconnecting, or the Wi-Fi connection. If the dot has disappeared, it’s likely the option selected on the PurpleAir map. If you … --- _[View the full topic](https://community.purpleair.com/t/map-dot-disappeared/3364)._