The mobile signal repeater will auto shut down when the input signal intensity is too strong ?

Yes, a mobile signal repeater (also called a cell phone booster ) can automatically shut down when the input signal intensity is too strong . this is to prevent a condition called oscillation . 

Here is why : 

Oscillation : this happens when the boosted signal feeds back into the input , creating a loop . this can overload the repeater and discrupt the cellular network . 

Auto shut down : to prevent this ,many repeaters have built-in safeguards . if they detect oscillation due to a strong input signal ,they will automatically shut down to protect themselves and the network . 

Here are some terms you might see related to this : 

Automatic gain control (AGC):this feature automatically adjusts the repeater's gain to prevent overload . 

Isolation : this refers to the distance and positioning of the repeater's antennas to mimimize feedback . 

If your mobile signal repeater keeps shutting down ,it could be due to a strong input signal .here are some things you can try :

Check the antenna placement : make sure the outdoor and indoor antennas are far enough apart(as recommended by the manufacturer ) to minimize feedback .

Consult the manual : your repeater's manual should have troubleshooting tips for auto shutdowns . 

If you are still haveing trouble .it is best to contact the repeater manufacturer for further assistance .