K&K Systems’ Sign Alert™ Emergency Warning Systems are designed to be activated only in emergency situations. Emergency vehicles such as fire trucks and ambulances must have the capability to leave their base quickly and safely. The Emergency Warning System allows personnel to activate the Sign Alert using the a wireless remote control which alerts traffic to emergency vehicles. The Key Fob remote control works up to a distance of 700 feet. The remote control communicates wirelessly with up to 4 Sign Alerts via the CrossTalk controller located in the control box. Once the “on” button is pushed, the Sign Alert will flash for the programmed amount of time allowing quick and easy departure and return.