Signal Dynamics Back Off XP/Brake Light Signal Module<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Compact; solid-state electronic module converts brake lights into 2 choices of visual alerting signals when brakes are applied</li><li>Mode one emits 3 short flashes followed by one long flash (3.5 seconds); Repeats as long as brakes are applied</li><li>Mode 2 emits 5 short flashes followed by a steady on light; light remains on until brakes are released</li><li>Specifications: 12V DC， max. capacity 10A， sealed weather-resistant heat sink case， 2 1/4in. L x 5/8in. H x 1 5/8in. W</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41RRX9UR8-L.jpg" noproxy>