A weapon simulator assembly having a wireless module provided in a simulated weapon to maximize the freedom of movement for the user and to provide complete diagnostics from electronic sensors for users of the firearms training simulator. The wireless module is embedded in the simulated weapon used in the simulator assembly and connected to various sensors to obtain operational information. The wireless data communication link is a wireless module using a frequency hopping spread spectrum technology such that the wireless module can fit in a small firearm simulator, such as a handgun or chemical spray simulator.