The Strato Automation OS214W is an OPENSTAT configurable BACnet wall controller with 7 I/O (2 universal inputs, 1 analog output, 4 binary outputs), a built-in temperature sensor, and BACnet MS/TP plus BACnet/IP over Wi-Fi 6. It mounts on a standard 2 x 4 in. electrical junction box and runs on 24 VAC/VDC.
The OS214W controls simple FCU, RTU and heat pump equipment, including electric heating, with multiple configuration profiles to fit the project. Its Wi-Fi 6 module adds BACnet/IP and embedded web services, so the controller can be configured from a phone or laptop browser as well as from the local interface, BACnet configuration objects or Strato software tools.
Best For
- Electric heating
- Simple fan coil units (FCU)
- Simple rooftop units (RTU)
- Simple heat pumps (HP)
- Projects that need BACnet/IP over the building Wi-Fi network as well as BACnet MS/TP
- Equipment that needs room temperature sensing only
Warranty
Strato Automation backs the OS214W with a 2-year manufacturer warranty.
Key Features
BACnet MS/TP and Wi-Fi 6 BACnet/IP
BTL listed BACnet Building Controller (B-BC). Connects on MS/TP (76800 bps default) and on BACnet/IP over Wi-Fi 6 at 2.4 GHz with WPA3 or WPA2 security, integrated web services and REST API support.
7 I/O on the Wall
2 universal inputs (10K thermistor Type 2 or 3, dry contact, 0-10 VDC), 1 0-10 VDC analog output and 4 isolated MOSFET solid state relay binary outputs rated 10 to 30 VAC, 2.0 A max.
Built-In Temperature Sensor
Room temperature accuracy of ±0.2 °C from 0 to 60 °C (±0.36 °F from 32 to 140 °F).
Phone and Browser Setup
A built-in Wi-Fi access point lets a phone or laptop open the embedded web pages directly. Export a finished configuration and import it on the next controller.
ASHRAE Guideline 36
Configurable applications are ASHRAE G36 compliant, with configuration profiles for simple FCU, RTU and heat pump equipment, including electric heating.
Junction Box Mount
On-board screen with 4 side buttons in a white PC-ABS UL94 V-0 enclosure that mounts on a standard 2 x 4 in. electrical junction box.
ZOT Supply is an authorized distributor of Strato Automation products.
Technical Specifications
| Identity | |
| Manufacturer | Strato Automation |
|---|---|
| Model | OS214W |
| Product line | OPENSTAT configurable wall controller |
| I/O | |
| Total I/O | 7: 2 universal inputs (AI/BI), 1 analog output, 4 binary outputs |
| Power | |
| Supply | 24 VAC/VDC ±15%, Class 2 |
| Current consumption | 1.5 VA controller only; 96 VA max including binary outputs at 2 A each |
| Communication | |
| BACnet MS/TP | MS/TP device; 9600, 19200, 38400, 76800 bps (76800 default) |
| RS-485 transceiver | 1/4 load device |
| Service port | Mini USB2 for MS/TP network access |
| BACnet/IP | Wi-Fi 6, 2.4 GHz BACnet/IP module with integrated web services and REST API support |
| BTL listing | BTL listed, BACnet Building Controller (B-BC), listing BTL-31479 |
| Inputs | |
| Universal input types | 10K ohm thermistor (Type 2 or 3), dry contact, 0-10 VDC (20K ohm input impedance) |
| Input resolution | 12 bits (4096 segments) |
| Outputs | |
| Binary output type | MOSFET solid state relays, isolated; 10 to 30 VAC, 2.0 A max |
| Analog output type | 0-10 VDC linear |
| Wi-Fi | |
| Standard | Wi-Fi 6 (IEEE 802.11ax), single band 2.4 GHz |
| Security | WPA3-Personal (SAE) or WPA2, selectable |
| Radios | Access Point mode for direct phone or laptop setup; Station mode for the building Wi-Fi network |
| Range (line of sight) | Station mode up to 30 m; Access Point mode up to 12 m |
| Network notes | Broadcast SSID required (hidden SSIDs not supported); DHCP or fixed IP |
| Sensors | |
| Temperature sensor | Built-in; ±0.2 °C @ 0 to 60 °C (±0.36 °F @ 32 to 140 °F) |
| Hardware | |
| Microprocessor | STM32 (ARM Cortex M33), 32 bits, 250 MHz |
| Memory | 2 MB non-volatile flash; 640 KB SRAM |
| Real-time clock | Built-in capacitor, one-week backup |
| Mechanical | |
| Dimensions (W x H x D) | 3.58 x 4.92 x 0.98 in. (91 x 125 x 25 mm) |
| Mounting | Standard 2 x 4 in. electrical junction box |
| Enclosure | White, PC-ABS, UL94 V-0 |
| Environment | |
| Storage temperature | -22 to 122 °F (-30 to 50 °C) |
| Operating humidity | 10 to 90% RH, non-condensing |
| Configuration | |
| Configuration methods | Embedded web pages (mobile configuration), local interface, BACnet configuration objects or Strato software tools |
| Certifications | |
| Safety | UL 916 Energy Management Equipment |
| FCC | Class A digital device, pursuant to Part 15 of the FCC Rules |
| Compliance | |
| Sequences | ASHRAE Guideline 36 (G36) compliant applications |
| Energy code | Designed to support installations intended to meet California Title 24 Building Energy Efficiency Standards performance requirements when properly configured and commissioned |
| Warranty | |
| Manufacturer warranty | 2 years |
Specifications verified November 4, 2026 against the Strato Automation OS214 Spec Sheet (May 2026, rev 3), the OPENSTAT Series Wi-Fi User Guide (July 2026, rev 5) and BTL Listing BTL-31479.
Frequently Asked Questions
What is the Strato Automation OS214W?
The OS214W is an OPENSTAT configurable BACnet wall controller with 7 I/O (2 universal inputs, 1 analog output, 4 binary outputs) and a built-in temperature sensor. It communicates on BACnet MS/TP and on BACnet/IP over Wi-Fi 6.
Does the OS214W support BACnet/IP over Wi-Fi?
Yes. The OS214W has a Wi-Fi 6 (802.11ax) BACnet/IP module on the 2.4 GHz band with WPA3-Personal or WPA2 security, and it also supports BACnet MS/TP. It is BTL listed as a BACnet Building Controller (B-BC). The network must broadcast its SSID; hidden SSIDs are not supported.
How many inputs and outputs does the OS214W have?
7 in total: 2 universal inputs that accept a 10K thermistor (Type 2 or 3), dry contact or 0-10 VDC, 1 0-10 VDC analog output and 4 isolated MOSFET solid state relay binary outputs rated 10 to 30 VAC, 2.0 A max.
How accurate is the temperature sensor on the OS214W?
The built-in temperature sensor is rated ±0.2 °C from 0 to 60 °C (±0.36 °F from 32 to 140 °F).
What power does the OS214W need?
24 VAC/VDC ±15%, Class 2. The controller alone draws 1.5 VA; maximum consumption is 96 VA including the binary outputs at 2 A each.
How do you set up the OS214W on Wi-Fi?
Connect a phone or laptop to the controller's built-in access point, open its embedded web pages at https://192.168.4.1, then enter the building Wi-Fi network in Station mode. A finished configuration can be exported and imported on the next controller.
What warranty comes with the OS214W?
Strato Automation provides a 2-year manufacturer warranty.
- Supported Protocols:
- BACnet MS/TP
- Supported Protocols:
- BACnet/IP
- Wireless:
- Wi-Fi 6
- Voltage:
- 24VAC/VDC
- Universal Inputs:
- 2
- Analog Outputs:
- 1
- Binary Outputs:
- 4
- Built-In Sensors:
- Temperature
