In order to use when searching for your CRASH & CARRY training dummy with an infrared camera. The pad is delivered vacuum-packed. When opened, the THERMO PAD reacts with the oxygen in the air. After an activation time of about 20 minutes, the pad develops a heat signature, that is clearly visible via infrared, as the THERMO PAD heats up to a temperature of about 50° C. At an air temperature of about 20° C, the pad can be used for at least four hours. The pad is designed for single use only and can be disposed of as domestic waste after it has been used.