AprilAire 8811 RS-232 / RS-485 Thermostat Protocol Adapter
AprilAire 8811 RS-232 / RS-485 Thermostat Protocol Adapter
Serial protocol conversion for legacy AprilAire communicating-thermostat automation systems.
The AprilAire 8811 Protocol Adapter converts the long-distance RS-485 communication used by compatible AprilAire thermostat networks into RS-232 serial communication for a host computer or automation controller.
AprilAire system documentation uses the 8811 within legacy communicating-thermostat architectures and specifies support for up to 32 thermostats on a compatible system.
Key Features
- Converts AprilAire RS-485 thermostat communications to RS-232.
- Supports up to 32 compatible communicating thermostats.
- Designed for host-computer / automation-system serial integration.
- Includes serial connection hardware and power supply in standard packaging.
- Useful for system communication troubleshooting and integration.
Application & Compatibility
The 8811 is a legacy automation accessory, not a general-purpose USB or Ethernet interface. Confirm the thermostat generation, distribution-panel architecture and host serial requirements before ordering.
Key Specifications
| Model | 8811 |
|---|---|
| Product Type | Thermostat protocol adapter |
| Thermostat Network Side | RS-485 |
| Host Side | RS-232 |
| Maximum Supported Thermostats | Up to 32 compatible thermostats |
Related AprilAire Products
- AprilAire 8062 Temperature & Humidity Support Module for 8870 Thermostat
Frequently Asked Questions
What does the 8811 convert?
It converts the AprilAire communicating-thermostat RS-485 signal to RS-232 for a compatible host or automation controller.
How many thermostats can it support?
AprilAire documentation and distributor specification sheets state support for up to 32 compatible communicating thermostats.
Is it intended for S86 thermostats?
No. Treat the 8811 as a legacy communicating-system accessory and verify the exact architecture before ordering.