Successor for the GM-SL2 and is FLASH-LINK UpdatableIncludes the 2-Way Data-Link Communication Port Easy InstallationPasskey III/Passlock I/II & VATS Data Bypass Kit via Class 2 DatabusStable from 4, 5 to 25-Volts and to -40 Degrees CelciusCompatible with Any Remote Starter2 Step Programming ProcedureSimplified and Fool-Proof Installation InstructionsSelf-Learning AlgorithmEstimated Install and Program Time is Less than 15 MinutesSupports 2-Way Datalink Communication for a Simplified Installation SKU: DAS721