Crimestopper SP-201 SecurityPlus Deluxe 1-Way Alarm and Keyless Entry System Deluxe 1-Way Alarm & Keyless Entry System 2 Ultra-Slim Style Remote Transmitters 2-Way Data Port For Easier Installation Dynamic Code Learning Receiver Upgraded On-Board Starter Kill Relay For Easier Installation Two vehicle operation and dynamic code protection Audible and visual arm/disarm with intrusion alert; includes positive and negative door trigger inputs (selectable) On-board starter kill relay; hood/trunk trigger input; armed output for external starter kill relay or window roll up module Driver's door priority unlock and double unlock pulse (programmable); backed by limited lifetime warranty