Aprilaire Protocol Adapter, RS232-to-RS485 communicates directly with the 8870 thermostats.
An 8811 protocol adapter is a must in everyone’s tool box. With it you can communicate directly with the Aprilaire 8870 thermostats saving hours in troubleshooting time. The 8811 converts RS422/485 to RS232 for communication with your laptop and terminal program or home automation system.
- Includes 7.5VAC, 500MA power supply
- Converts RS2332 to RS485
- DB9 connector and cable included