Abstract: Lighting unit that can be mounted to a vehicle for illuminating work or emergency areas at night. The lighting unit includes a mechanically controllable driver for selecting a position of a central optical axis of the light emitter and an electronically adjustable refractive element for modulating a beam spread configuration generated by the lighting unit.

Abstract: An electronically controlled motor driven siren. The siren is electronically controlled to generate different sound profiles, while having advantages of a motor driven mechanical siren. In some embodiments, the siren is part of a system of multiple sirens. The phases of the rotors of the sirens of the system can be electronically controlled to generate different multi-siren combined sound profiles.

Abstract: Lighting unit that can be mounted to a vehicle for illuminating work or emergency areas at night. The lighting unit includes a mechanically controllable driver for selecting a position of a central optical axis of the light emitter and an electronically adjustable refractive element for modulating a beam spread configuration generated by the lighting unit.

Abstract: An example system for wirelessly changing a light flash pattern in a light element of a vehicle includes: a light element attached to a vehicle; a controller circuit located in the light element configured for receiving a light flash pattern signal, wherein the controller circuit includes: an antenna; a microcontroller configured for data communication; a lighting control circuit configured for controlling a light flash pattern of the light element; and an EEPROM used for storing the light flash pattern signal; and a transmitter device capable of transmitting the light pattern signal to the controller circuit.