If the Bushnell Trail Sentry 11-9200 is turned on without an SD Card in place, it may need to be reset. Reset it by pulling one of the batteries out partway, insert a new or empty SD card, and put the battery back in place. Read this Set Up Guide
for instruction how to set up your passcode.
The camera will not Make sure the power is off before installing or removing the SD Card. If you forget, you need to do the reset procedure above.
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