![](https://gqt.gr/477/gs331-carrier-tester.jpg)
The tester GS331 is used to verify the operation of the glued-on-glass glass break detectors GS300/310. You test the detector by pressing the tester against the window. A noise will be heard simulating a glass breakage. It is recommended to test the glass break detectors before and after the installation.
Please note that this is not a range tester.
Test Procedure