LaserPower Version I
The photocells react to direct irradiation of more than approx. 7000 - 10,000 LUX. The max. solar irradiation in July with clear air is approx. 140,000 Lux. This statement applies to LaserPower rifles version I.
LaserPower II and higher versions
This does not apply to LaserPower II, III and IV, as the laser beam is coded and the LaserPower target only reacts to a coded laser beam.