LED Amber Multi-Function Flashing Warning Light Bolt-On, EMC 4 LED 12W

13 functions that can be synchronised with multiple units for maximum effect. 96x28x19mm Width x Height x Depth, EMC Compatible. 

What is EMC?

ElectroMagnetic Compatibility (EMC) is a characteristic of electrical equipment such as lighting that permits it to operate as intended in the presence of other electrical and electronic equipment, and not to adversely interfere with that other equipment. In simple terms this light unit will not interfere with SatNav systems or digital radios.