American Fibertek MR-81SL-280 Eight Contact Module Rx 1310nm 21dB Non Latching Relays SM
- Form-C (Normally Open or Normally Closed) Dry Contact Closure
- Latching Relays reduce power requirement
- User-Selectable feature maintains Contact
- Status through Power-Cycle and Loss-of-Optical-Power
- User Control to Reset all Contact Status

The MR-81SL-280 from American Fibertek multiplexes 8 channels of dry latching contact closure on one singlemode fiber. The American Fibertek 82SL multiplexes 16 channels of dry latching contact closure on one singlemode fiber. A user-selectable feature allows the contact status to be maintained unchanged or reset through power-cycle and loss-of-optical-power. A reset button is available to clear all contact status to the default state. Individual channel LEDs on the transmitter and the receiver units indicate the channel status. These systems require no field adjustments at installation or additional maintenance thereafter. Diagnostic indicators provide a quick visual indication of system status. Equipment may be ordered as stand alone modules or rack cards that are mounted in the SR-20D/2 or SR- 20R/1 AFI Card Cages. The “Afinety” intelligent remote monitoring system is available on the Rack Card product, please consult factory.
Features
- Form-C: Normally Open or Normally Closed Dry Contact Closure provides flexibility for integration into different types of systems.
- Latching Relays: Reduce power requirement, making the system more energy-efficient and cost-effective.
- User-Selectable Feature: Maintains contact status through power-cycle and loss-of-optical power, ensuring reliable operation during outages.
- User Control: Reset all contact status, enhancing user-friendliness and simplifying system management.
- Diagnostics: DC Power, Optical Presence, and Channel Indicators allow for easy troubleshooting and monitoring of system status.
- High Density DB26 Data Connector: With adaptor to screw terminal, ensuring compatibility and ease of connection in various setups.
American Fibertek MR-81SL-280 Detailed Specifications
| Feature | Details |
| Channel Capacity | 8 Channels |
| Fiber Type | Singlemode |
| Optical Wavelength | 1310nm |
| Relay Type | Non-Latching |
| Output Type | Dry Contact Closure |
| Diagnostic Indicators | DC Power, Optical Presence, Channel Status |
| Connector Type | DB26 Data Connector with Adaptor |
| Installation Requirements | No field adjustments; minimal maintenance |
| Optional Monitoring | Afinety intelligent remote monitoring system available |



