ES5300A2-SPK0022 is a two-channel 2X100 Watt electronic siren model, it matches with two 100W octangular speakers and Dual Remote Controllers. Equiped with two auxiliary light terminals on the main siren box makes it possible to run two-channel 12V Led Lights and is with easy finger press light control on the siren remote. It has microphone on the remote for broadcasting and the backlight designed wireless remote control distance is up to 10 meters, it gets rid of the cable limitation and makes it more flexible for siren operation. The attached steering wheel mounted remote offers a quick siren operation while driving. And it contains more than 20 different tones by default to fit for different vehicles like Police, Ambulance, Fire, Breacher, Engineer and some other Special Operation Vehicles. It will be a good choice for those vehicles and ocassions that have the demands for PA system and/or audio warning.