Directed Electronics 489X Clifford Matrix Security Responder Remote 2-way LCD remote offers true Multi-vehicle operation (Operate 4 cars with one remote). Remote Adjustable for On-board Stinger DoubleGuard Shock Sensor Replacement for the Clifford Matrix 10.5X Security systems Compatible with the Python 900 or the Viper 5000 Uses the GP 24AU 1.5V AAA Super Code Hopping 4 Button 2-Way ASK Transmitter