AeroStat · BACnet thermostats

Thermostats that speak BACnet natively.

AeroStat configurable wall controllers bring rooftop units, heat pumps, fan coils and air handlers onto the same BACnet trunk as the rest of the building, with up to 15 I/O and optional occupancy, CO₂ and Wi-Fi.

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BACnet MS/TP
Up to 15 I/O
Temp · RH · CO₂ · occupancy
Optional Wi-Fi 6

Configurable, not custom

One device, many applications: RTUs with economizers, heat pumps, fan coils and AHUs.

Real I/O at the wall

Up to 5 universal inputs, 3 analog outputs and 7 binary outputs, enough to run the unit directly.

Occupancy & air quality

Radar presence detection and self-calibrating NDIR CO₂ for demand-based ventilation.

Wired or wireless

MS/TP on every model; Wi-Fi models add BACnet/IP where pulling a trunk isn't practical.

Models

Three models. Every common application.

AeroStat 200

AST-200

Compact 7-I/O thermostat for single-zone equipment.

A configurable BACnet MS/TP wall controller with a color display for fan coils, rooftop units, heat pumps, unit heaters and electric heat. Add Wi-Fi for BACnet/IP where there's no trunk to pull.

I/O: 2 universal inputs · 1 analog output · 4 binary outputs
Display: Color display with side buttons
Applications: Fan coil · Rooftop unit · Heat pump · Unit heater · Electric heat

Ordering

AST-200BACnet MS/TP, temperature
AST-200-WBACnet MS/TP + Wi-Fi (BACnet/IP), temperature

AeroStat 500

AST-500

15 I/O for air handlers, rooftop units and heat pumps.

The full-featured AeroStat: 15 I/O, temperature and humidity standard, with optional radar occupancy, NDIR CO₂ and Wi-Fi. Big enough to run an RTU with economizer or a small AHU from the wall.

I/O: 5 universal inputs · 3 analog outputs · 7 binary outputs
Display: Color display with side buttons
Applications: Air handling unit · Rooftop unit · Heat pump · Water-source heat pump · Fan coil / unit ventilator

Ordering

AST-500-HBACnet MS/TP · temperature + humidity
AST-500-HW+ Wi-Fi (BACnet/IP)
AST-500-MHW+ radar occupancy + Wi-Fi
AST-500-MHCW+ radar occupancy + NDIR CO₂ + Wi-Fi

AeroStat 500 Touch

AST-500T

The AeroStat 500, with a full-color touchscreen.

All the I/O of the AeroStat 500 behind a full-color capacitive touchscreen, the premium choice for occupied spaces. Wi-Fi is standard, with optional radar occupancy and CO₂.

I/O: 5 universal inputs · 3 analog outputs · 7 binary outputs
Display: Full-color capacitive touchscreen
Applications: Offices & conference rooms · Classrooms · Hospitality · Retail · Any AeroStat 500 application

Ordering

AST-500T-HWTemperature + humidity · MS/TP + Wi-Fi
AST-500T-MHW+ radar occupancy
AST-500T-MHCW+ radar occupancy + NDIR CO₂

Specifications

Common specifications

Shared by every AeroStat model. Sensor rows apply to the models that include that sensor.

View datasheet

Communications

BACnet MS/TP: 9.6–76.8 kbps, ¼ unit load
Wi-Fi (W models): Wi-Fi 6, 2.4 GHz, WPA3; BACnet/IP over Wi-Fi
Local configuration: Built-in secure web interface on Wi-Fi models

Inputs & outputs

Universal inputs: 10 kΩ thermistor (Type 2 or 3), dry contact or 0–10 V
Analog outputs: 0–10 VDC
Binary outputs: Isolated solid-state relays for 24 VAC control circuits

Sensing

Temperature: High-accuracy digital sensor
Humidity (H models): Integrated relative-humidity sensor
Occupancy (M models): Radar presence detection
CO₂ (C models): Self-calibrating NDIR sensor

Power & physical

Power: 24 VAC/VDC, Class 2
Dimensions: Approx. 3.6 × 4.9 × 1.0 in
Mounting: Standard 2 × 4 electrical box
Enclosure: White flame-retardant PC/ABS
Operating environment: 0–50 °C (32–122 °F), 10–90% RH non-condensing

FAQ

AeroStat questions, answered.

Do AeroStats need an AeroNode?

No. AeroStat is a standard BACnet MS/TP device (and BACnet/IP on Wi-Fi models), so it works with any BACnet system. On an Aero system, AeroStats sit on an AeroNode trunk and appear in AeroView alongside the rest of the building.

What do the letters in the part number mean?

H = humidity, M = radar occupancy, C = NDIR CO₂, W = Wi-Fi. For example, AST-500-MHCW has humidity, occupancy, CO₂ and Wi-Fi.

What power do they need?

24 VAC or VDC, Class 2. The binary outputs are isolated solid-state relays designed for standard 24 VAC HVAC control circuits; full electrical ratings are in the dealer installation documentation.

Can one model cover several applications?

Yes. AeroStats are configurable: the same hardware can be set up for a rooftop unit, a heat pump or a fan coil, so dealers stock fewer part numbers.

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