Specification:
Filter Size : 110 x 90mm
Viewing Window : 93 x43mm
Optical Class : 1/1/1/2
Power ON/OFF : Fully Automatic
Power Supply : Big Solar cells + Replaceable CR2032 Lithium Battery
Switching Time from Light to Dark: 1/25,000sec
Switching Time from Dark to Light: 0.0 High, by external knob
Grinding : Yes, outside control with a knob together with shade adjustment
UV/IR protection : Up to shade DIN16
Operating Temperature : -5 °C - +55°C
Storing Temperature : -20 °C - +70°C