TÜV-tested and approved in accordance with GGVS hazard warning lamp for the securing of vehicles legal specification for trucks: on highways set up approx. 200 m, on interstate and state roads approx. 100 m behind the vehicle long service life thanks to energy-saving power LEDs, delivery without batteries (attention: the type-test led to the approval of Varta and Duracell batteries only) 2x LR20 monocell batteries are required