| Model Number | ALK-4001 |
| Identified Wavelength Range | 800-1700nm |
| Identified Signal Type | CW270Hz±5% 1kHz±5% 2kHz±5% |
| Detector Type | 01mm InGaAs 2pcs |
| Adapter Type | 00.2500.902003.0 |
| Signal Direction | Left & Right LED |
| Singe Direction Test Range(dBm,CW/0.9mm bare fiber) | -46~10(1310nm) |
| -50-10(1550nm) |
| Signal Power Test Range (dBm,CW/0.9mm bare fiber) | -50~+10 |
| Signal Frequency Display(Hz) | CW, 270Hz±5%，1kHz±5%，2kHz±5% |
| Frequency Test Range (dBm,Average Value) | Ø0.9, Ø2.0, Ø3.0 | -30~0(270Hz1KHz) |
| -25~0(2KHz) |
| Ø0.25 | -25~0(1KHz,2KHz) |
| -20~0(2KHz) |
| Insertion Loss(dB,Typical Value) | 0.8(1310nm) |
| 2.5(1550nm) |
| Alkaline Battery(V) | 2pcs AAA batteries |
| Operating Temperature(℃) | -70 |
| Storage Temperature(C) | -95 |
| Dimension(mm) | 196X30.5X27 |
| Weight (g) | 195 |