IMSA-MSE
The IMSA Safety Light Transponder (In-car alert receiver) is to be used in conjunction with the IMSA Safety Light System in the following series:
WeatherTech Series
GTP, DPi, LMP2, LMP3, GTD (AM), GTD Pro
VP Racing SportsCar Challenge
LMP3 (GSX)
These are a certified used unit, with no warranty.