| Fibre Type | SMF, Single fiber, 9/125um |
| Connector | LC |
| Date Rate | 1250 Mbps |
| Connector quantity | 1 |
| Distance | 0~20km |
| Wavelength | Tx1310nm/Rx1550nm / Tx1550nm/Rx1310nm |
| TX Power | -9~-1dBm |
| RX Sens(Max.) | -21dBm |
| Operating temperature | 0~70˚C |
| Power supply voltage | DC 3.3V |
Note: HK-SFP-1.25G-20-1310 has to work with HK-SFP-1.25G-20-1550 as a pair.
