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September 08, 2026 3 min read
Installation instructions for the AprilAire Model 8083 Flush Mount Temperature and Humidity Module, covering DIP switch configuration, specifications, and mounting/wiring to compatible thermostats.
Installation instructions for the AprilAire Model 8083 Flush Mount Temperature and Humidity Module, which remotely senses temperature and humidity for compatible AprilAire thermostats.
The 8083 Flush Mount Temperature and Humidity Module remotely senses temperature and humidity in a space. When wired to any AprilAire thermostat with Support Module capability, a combination of up to four total Model 8083 Flush Mount Modules and Model 8081 (TT) or 8082 (TrH) Support Modules can be used to remotely monitor temperature and humidity throughout multiple rooms or a larger space. Readings from multiple sensors can be averaged to create controlling values for the thermostat.
The Model 8083 has 4 DIP switches (A1, A2, T, H) that must be configured. Power down the thermostat for 90 seconds for DIP switch settings to take effect.
Each Flush Mount Module and/or Support Module must have its own unique address.
| Address | A1 | A2 |
|---|---|---|
| Address 1 | OFF | OFF |
| Address 2 | ON | OFF |
| Address 3 | OFF | ON |
| Address 4 | ON | ON |
The T switch sets whether the temperature sensor is a controlling (on) or monitoring (off) value; the H switch does the same for humidity. If off, the thermostat uses the sensor value only as a monitoring value (displayed on the thermostat / readable over its communication interface). If on, the thermostat treats it as a controlling value — if multiple temperature or humidity sensors are set to controlling, the thermostat averages the values for control, and displays the averaged value as the controlling temperature or humidity.
| Spec | Value |
|---|---|
| Temperature Range | -40 to 130°F (-40 to 55°C) |
| Temperature Accuracy | ±1°F, 60 to 80°F (comfort range); ±2°F, 40 to 100°F (control range) |
| Humidity Range | 0% to 99% R.H. (non-condensing) |
| Humidity Accuracy | ±5% R.H., 20% to 80% R.H. |
| Electrical | Operating voltage 24VAC (18 to 30VAC) |
| 8083 Module Wire | 8800 & 8820 Thermostat | 8830 & 8840 Thermostat |
|---|---|---|
| Red | RC | 1 |
| Black | C | 2 |
| Yellow | RSA | A |
| Green | RSB | B |
Note: For Model 8830 and 8840 two-piece thermostats, run the wire from the Model 8083 Flush Mount Module to the thermostat, not the equipment control module.
CAUTION: Damage to components can occur if power is not disconnected before installation.
AprilAirePartners.com — a Division of Research Products Corporation. P.O. Box 1467, Madison, WI 53701-1467. 800.334.6011, F: 608.257.4357. Printed in China. © 2017 AprilAire.
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