Works just perfect! You can switch to the different types of flashes with the third channel switch on the remote. Perfect combi with the police siren (also bought here at HK)Very bright lights! Dimensions - 89mm wide, 24mm high (body only), 30mm deep. Will flash a variety of patterns in a cycle when provided with power. If you connect to a receiver for power, then you can use your TX to select a single repeating flash pattern. The red/blue domes are quite brittle however. You may crack them in a roll over. I cracked mine just by handling the light during installation.