It is a handheld optical power meter, newly released in 2008, which can be used for absolute optical power measurements as well as for relative loss measurements in optical fibers. A ?.0mm photosensitive area photodiode is used to significantly improve the stability and the reliability. It features
| 
  MODEL  | 
 ST-  | 
 ST-  | 
| 
 Wavelength(nm)  | 
 800~1700nm  | |
| 
 Detector  Type  | 
 InGaAs  | |
| 
 Detector Size  | 
 1.0mm  | |
| 
 | 
 -70~+10  | 
 -50~+30  | 
| 
 Uncertainty  | 
 5%  | |
| 
 Calibrated Wavelength(nm)  | 
    850,1300,1310,1490,1550,1625                                  | |
| 
 Resolution(dB)  | 
 0.01  | |
| 
 Optical Connector  | 
 FC (interchangeable SC,ST) / as well as 2.5mm universal                                      | |
| 
 Power Supply  | 
 Alkaline   | |
| 
 | 
 140 h with 1.5V   | |
| 
 Operating Temperatrue(∩)  | 
 -10 ~ +60  | |
| 
 Storage Temperatrue(∩)  | 
 -25 ~ +70  | |
| 
 Relative Humidity  | 
 0 to 95% (non-condensing)  | |
| 
 Dimension(mm)  | 
 190X100X50  | |
| 
 Weight(g)  | 
 370  | |
| 
 MODEL  | 
 INCLUDES  | 
| 
 All ST-3211 Models  | 
 ST-3211 Optical Power Meter, 3pcs 1.5V batteries, AC Adaptor, Instruction Manual, Cotton Tampon and Soft carrying case.  | 
