Chirper XL TIR 6 LED Emergency Vehicle Grill Warning Light Head (Amber) Generation III LED surface mount light head Weather and vibration resistant Alternating or simultaneous flashing 4 wires - 1 pos, 1 Neg, 1 sync, 1 pattern,1 Voltage: 12-24 VDC 6 one watt LED elements SAE APPROVED Max current draw: 700mA@12.8 VDC 7 available flash patterns Durable housing protects against moisture and vibration Weather damage resistant LEDs 3 year manufacturer defect warranty Size 6.5 in L x 1.5 in D x 1 in H