Feature:
1. Accuracy:±(4 % FS+2dgt)FS:full scale
2. Response wavelength:(1000nm-1700nm) 
3. Measure range:0-19999 W/m2
4. Size:125mm*68mm*22mm(L*W*H)  
5. Weigh:about 110g 
6. 9V alkaline battery,6F22

Specification:
1. Accuracy:±(4 % FS+2dgt)FS:full scale
2. Response wavelength:(1000nm-1700nm) 
3. Measure range:0-19999 W/m2
4. Size:125mm*68mm*22mm(L*W*H)  
5. Weigh:about 110g 
6. 9V alkaline battery,6F22