ER3097B Features Can effectively warn the vehicles behind to avoid traffic accidents with too close distance when driving in the rain， fog or sandstorm weather Provides more eye-catching position caution and steering indication of the vehichles when driving at night Be helpful to new drivers for alignment when driving back into the garage General Specs Brand & Model  LF01 Laser wavelength 650nm (red color) Laser power 200mw Working voltage 11-24V Working Current 110-140mA Bearing Temperature of 3M Glue  -40~120℃ Waterproof grade IPX4 Ajustable Angle(Max) ±90degree from the top to bottom Laser safety grade Class IIIB Package Details Weight: 72.76 g Size: 11.5*11*2 cm