This is a waterproof aftermarket replacement for the factory piezo beeper found on Toyota and Lexus vehicles that use the RS3000 alarm system. This waterproof piezo will need to be spliced in like the factory piezo. The sound is very similar in tone to the factory beeper.
 
If your vehicle has the RS3000 alarm system, you may want to consider updating to a more modern aftermarket alarm using our plug and play adapter.