The GS-911WiFi has a configurable sleep / low power mode which can be configured under the Setup->Options menu. It will only draw about 2.5 mA when sleep mode is activated and thus preserve your bike battery.
It can monitor:
and then switch to sleep mode after a specified, configurable time interval (60-600 seconds). During sleep / low power mode the LED will flash at 2 second intervals as described here.
The device will wake up if
If the bike's diagnostic connector is not located under the seat you can use an extension cable to route the device to the connector while leaving it under the seat.