HQRP Blue Emergency Warning 36 LEDs 4 Panels Windshield/Grille Strobe Flashing Lights Bars for Maximum Visibility plus HQRP UV Meter HQRP&reg; Blue Strobe Light Panels plus HQRP&reg; UV Meter; 4 Panels, 36 LEDs: 9 LEDs per Panel; Working Voltage: 12V DC; Dimensions Each panel: 7.5" Length, 1.9 Width, 1" Height; Control box supply Button A/B/C for 3 flashing patterns; 200 days warranty!