The CrimeStopper OFA-20 is an integration module that can control transponder and convenience features on vehicles. This product is generally called a transponder/door lock interface. The OFA series of products are made by Idatalink, this product is the same as the ADS-DL.
The CrimeStopper OFA-20 is a transponder/ door lock interface that will tell the vehicle the correct transponder is in the vehicle as well as what commands the remote start is wanting it to do, such as lock, unlock, trunk release, etc. The OFA series of products are made by Idatalink and this product is the same as the ADS-DL. As with all OFA series products you do need to flash the module prior to use using the OFA-123.