The SC115 External Test Transmitter is a range test transmitter developed to generate a simulated attack signal in protected object with multiple SC100 seismic detectors installed in concrete vaults and all other solid structure value storage units. The Test Enable signal activates SC115 that generates a specific vibration signal in the structure of the protected object. If the signal propagation in the protected solid structure is unchanged, the mounting and the function of the seismic detector is good, all seismic detectors will respond with an alarm signal. The SC115 have a flexible interface to different control panels regarding appearance of the Test Enable signal.