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Aprilaire Protocol Adapter, RS232-to-RS485 (8811)

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The Aprilaire Protocol Adapter allows your PC/automation system to communicate directly with an Aprilaire 8870 thermostat, 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, DB9 connector, and cable.

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