"Wolo Lighting offers the perfect choice for fire/rescue, police, ambulances or construction vehicles requiring powerful hidden warning lights that will vastly increase visibility. Grommet-style clear strobe bulbs are designed for reliability and high performance, each one encapsulated in silicon to protect against moisture and road vibration. Six advanced flash patterns are controlled with the touch of a button from the control panel included. Dimensions D x W x H in. Power supply 5 1/2 x 5 3/8 x 1 3/4, Housing Material ABS plastic, Connector Type Prewired locking connectors, Flash Patterns qty. 6, Light Shape Grommet style, Bulbs Per Light qty. 1, Light Color Clear, Mount Type Bracket, Mounting Hardware Included Yes, Light Type Strobe light, Lights Included qty. 4, Light Size in. 1, Power Cord ft. 10. Heavy-duty 12-24 VDC power supply is engineered with the latest electronic technology using a field proven microprocessor to provide years of dependable service Easy-to-install kit includes 6ft. wire leads and locking connector, high-voltage cables with locking connectors, switch control panel and mounting hardware"