Viewing Area:90×35mm Cartridge Size:110×90×10mm Arc Sensor:2 Light State:DIN 4 Dark State:Fixed shade 11 Shade Control:Unadjustable Power On/Off:Fully Automatic Sensitivity Control:Unadjustable,Auto UV/IR Protection:DIN 16 Power Supply:Solar cells. Re-chargeable battery .No battery change required Switching Time:1/5000S,from Light to Dark Dark to Light:0.15-0.45S Auto Low Amperage TIG:≥20amps(DC), ≥20amps(AC) Operating Tep:-5℃~+55℃ Storing Tep:-20℃~+70℃ Packed by color box