You need the other end of that single-strand link. The TP-Link ISM321B-20 pairs with the ISM321A-20 to close the circuit — 1000Base-BX WDM bi-directional over one single-mode LC strand. Hot-pluggable into your industrial switch. DDM for remote diagnostics. Runs -40°C to 85°C. SFP-MSA compliant. Three-year warranty. Add to cart and get both ends of your link running
| brand | TP-Link |
| model | ISM321B-20 |
| type | Industrial SFP Module |
| standard | 1000Base-BX |
| technology | WDM Bi-Directional |
| fibre_type | Single-mode |
| connector | LC |
| operating_temperature | -40°C to 85°C |
| ddm | 1 |
| msa_compliant | 1 |
| hot_pluggable | 1 |
| warranty | 3-Year |
