Scytek Astra A4 Complete Remote Security/Engine Start System with Keyless Entry Two 5 Button Remote Controls with Separate Lock & Unlock Plug In Dual Zone Impact Sensor/Plug in User Programmable Coded Override Switch & LED Lock, Unlock and Passenger Unlock Outputs (-): User Selectable Auto-Lock and Unlock with Ignition Auto Start Based on the On-Board Real Time Clock Set through LCD Remote/Auto Start Based On Temperature Threshold Set through LCD Remote Mobilink Compatible