PTAC Thermostat Kit

The Milesight PTAC Thermostat Kit combines the room-facing WT401 Wireless Smart Thermostat with the equipment-side UC711 Smart HVAC Controller for 24VAC PTAC systems. Designed for hotels and multi-unit residential properties, it provides intuitive in-room comfort control while enabling managers to centrally configure, monitor, and manage HVAC devices.

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One Kit Connects In-Room Comfort
with Building-Level PTAC Management

WT401 Wireless Smart Thermostat gives guests a clear room interface for
temperature, mode, and fan settings. UC711 Smart HVAC Controller receives
those commands and controls 24VAC PTAC heating, cooling, and fan outputs
at the equipment side.

PTAC Thermostat Kit

Flexible Thermostat-to-Controller Connectivity

Remote and Centralized HVAC Management

wt401 uc711 ptac thermostat kit products
wt401 uc711 ptac connectivity options

WT401 and UC711 support multiple communication options for different installation and retrofit requirements.

Wireless Control via Bluetooth

Bluetooth also removes the need for dedicated control wiring between the thermostat and PTAC controller, enabling faster retrofits with less wall disruption and lower installation labor. Besides, WT401 and UC711 are pre-paired over Bluetooth for faster out-of-box setup.

Fast-Response Wireless Control via Milesight D2D*

Milesight D2D is designed to provide low-latency device-to-device control without relying on a LoRaWAN® gateway or network server.

Stable Wired Control via PowerBus*

PowerBus is designed to provide wired communication and power over a single cable, supporting stable control in fixed installations.

Explore WT401
lorawan centralized ptac management diagram

Through LoRaWAN®, UC711 connects distributed PTAC units to a centralized management system, enabling remote configuration, monitoring, group
control, and ongoing device maintenance.

Deliver Smarter PTAC Control for Comfort, Efficiency, and Protection

Guest-Friendly Control and Privacy-Safe Sensing

Comprehensive PTAC Control

Advanced Control and Protection

Adaptive Control Based on Room Conditions

Connected Monitoring and Data Resilience

2.7-Inch E-Ink with Brilliant Clarity

The 2.7-inch E-Ink screen clearly presents temperature, HVAC mode, and fan status. Its clean layout keeps essential room information easy to read at a glance.

Large Buttons. Effortless & Customizable Control

Large physical buttons provide direct access to everyday comfort settings. Guests can make adjustments without navigating complex menus, while customizable functions support different room requirements.

Privacy-Safe PIR Sensing in a Discreet Design

WT401 uses PIR technology to detect room occupancy without capturing images or audio. Its flat, unobtrusive design also avoids camera-like appearance that may concern hotel guests.

wt401 eink thermostat display
wt401 large button thermostat control
wt401 privacy safe pir occupancy sensing

Designed for Broad PTAC Compatibility

UC711 provides dedicated 24VAC control terminals for connecting to compatible PTAC systems across different brands and configurations.

Check PTAC Compatibility

Temperature, Mode, and Fan Control

Set temperatures from 5°C to 35°C and select Heat, Cool, or Auto mode. Choose from Low, Medium, High, Auto, and Circulate fan modes to meet different comfort requirements.

Automated Temperature Scheduling*

Create up to eight temperature-control plans, each with up to 16 scheduled periods. Automatically adjust PTAC settings throughout the day with less manual intervention.

uc711 ptac wiring diagram
ptac temperature mode fan control
automated ptac temperature scheduling

Multicast Group Control for Bulk Operations

Use LoRaWAN® Multicast to send control commands to groups of UC711 controllers. Coordinate PTAC operation across multiple rooms without managing every controller individually.

Learn more>

Open Window Detection*

Automatically pause heating or cooling when a sudden temperature change indicates that a window may be open, helping prevent unnecessary energy use.

Automatic Freeze Protection

Built-in freeze protection automatically activates heating when room temperatures approach freezing, helping prevent pipe damage and costly repairs.

lorawan multicast ptac group control
ptac open window detection
ptac automatic freeze protection

Accurate Control with External NTC Sensor*

Connect an optional external NTC sensor to provide temperature data from a selected sensing location. UC711 can then regulate PTAC operation based on conditions where temperature accuracy matters most.

Occupancy-Aware Control with WT401

WT401 provides UC711 with room occupancy information, allowing PTAC operation to respond more closely to actual room use. This helps reduce unnecessary operation while keeping comfort controls readily available to guests.

Explore WT401

Keycard-Activated HVAC Control*

Connect a physical hotel keycard switch to the UC711 dry-contact input to coordinate PTAC operation with room use.

uc711 external ntc temperature sensor
ptac occupancy detection
keycard activated ptac hvac control

Real-Time HVAC Monitoring and Alert*

Monitor temperature and HVAC operating status through the connected management platform. Temperature-threshold alerts help managers identify sudden changes and respond more quickly.

On-Board Storage for 1,000 Records*

UC711 can store up to 1,000 data records locally. This on-board buffer helps preserve operational data during temporary network interruptions.

Data Retransmission and Retrieval*

UC711 can retransmit buffered records after network connectivity is restored and retrieve stored data when needed.

ptac temperature threshold alert
uc711 onboard data storage
uc711 data retransmission retrieval

Streamline Deployment and Maintenance

Installer-Friendly Design and Diagnostics

Flexible Configuration

wt401 battery powered thermostat
uc711 compact hvac controller dimensions
uc711 hvac controller status indicators

Long Battery Life for Flexible Placement and Lower Maintenance

WT401 supports battery-powered operation and wireless communication with UC711, enabling flexible thermostat placement without adding dedicated control wiring. A battery life of up to 5 years helps reduce replacement frequency and ongoing maintenance effort across multi-room deployments.

Compact for In-Unit Installation

The compact 120 × 60 × 20.5 mm enclosure of UC711 can fit inside many compatible PTAC units. Its low-profile design provides greater placement flexibility within the available internal space.

See Device Status at a Glance

Dedicated SYS, BLE, LoRa, and NFC indicators provide clear feedback on power, pairing, network, and configuration status. Installers can quickly check device operation during commissioning and troubleshooting.

wt401 uc711 nfc device provisioning
uc711 bluetooth onsite commissioning
lorawan downlink remote ptac configuration
lorawan fuota ptac firmware update

NFC for Contactless Device Provisioning

Read and apply device settings through a quick, close-range NFC interaction without opening the enclosure or connecting cables.

Bluetooth for Convenient On-Site Commissioning

UC711 can be configured via Bluetooth 5.3 without reopening the PTAC enclosure.

LoRaWAN® Downlink for Remote Configuration

Deliver supported settings and configuration changes to UC711 and WT401 through LoRaWAN® downlinks. This enables centralized configuration without accessing devices room by room.

LoRaWAN® for Scalable Firmware Update

Deliver supported settings and configuration changes to UC711 and WT401 through LoRaWAN® downlinks. This enables centralized configuration without accessing devices room by room.

Simplify Hotel PTAC Retrofits
with the UC711 + WT401

Designed for Existing Guest Rooms

WT401 can communicate wirelessly with UC711, reducing the need to add a dedicated control cable between the thermostat position and the PTAC. This makes the solution well suited to hotel rooms where new in-wall wiring would be disruptive or impractical.

Privacy-Safe Occupancy Sensing

WT401 uses PIR technology to detect room occupancy without capturing images or audio. Its flat, unobtrusive sensing design also avoids the camera-like appearance that may raise privacy concerns among hotel guests, while supporting occupancy-aware HVAC control.

Connect Local Comfort with Centralized Operations

Guests can adjust room comfort through WT401, while UC711 executes PTAC control and connects to the LoRaWAN® architecture. Hotel teams gain a path to remote configuration, group control, monitoring, and ongoing device management across the property.

Flexible Placement with Faster, Lower-Cost Installation

Battery-powered WT401 communicates wirelessly with UC711 inside the PTAC, enabling flexible placement without dedicated control wiring. In one customer-reported project, installation took about 10 minutes per room, compared with 45–60 minutes for a wired thermostat, helping save an estimated USD 10,000+ in labor across 112 rooms.*

*Results vary by project conditions.

Balance Energy Savings with Guest Comfort

The PTAC Thermostat Kit helps hotels reduce unnecessary PTAC operation through occupancy-aware control, keycard-based control, automated temperature schedules, open-window detection, and centralized group management.

Turn Savings into Measurable Returns

Based on an internal model of a 120-room hotel with 70% occupancy, the solution could reduce HVAC electricity costs by an estimated 37.7% compared with a traditional, non-retrofitted setup. It could also deliver over USD 20,000 in annual net savings and achieve an estimated payback period of approximately 1.6 years.*

*Actual results vary by project conditions. Contact us for a project-specific savings estimate.

Discuss Your Hotel PTAC Retrofit

UC711 and WT401 work together as a coordinated solution for upgrading PTAC systems in existing hotel rooms. The combination connects intuitive guest control with equipment-side HVAC execution and centralized property operations.

Under Development Notice

The following functions are currently under development and are not available in the current release. Availability and specifications are subject to future product updates.

wt401 uc711 ptac thermostat kit

External NTC Sensor Input

External Sensor Mode

Dry-Contact Input for Keycard and Magnet Switches

Automated Temperature Scheduling

Open Window Detection

Temperature Threshold Alerts

Local Data Storage for 1,000 Records

Data Retransmission and Retrieval

PowerBus Communication with WT401

Milesight D2D Communication

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Specifications

Wireless Transmission
TechnologyLoRaWAN®, Milesight D2D
AntennaInternal Antenna
FrequencyIN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power16dBm (868 MHz)/22 dBm (915 MHz)
Sensitivity-137dBm
ModeOTAA/ABP Class C
Thermostat Feature
CompatibilityPTAC (2H/1C), AC & Furnaces (1H/1C) or Heat Pumps (2H/1C)
Wire TerminalsRC, C, Y1, W1, O/B, GM, GL, GH
Wire RelaysAC 24V (@Typ. 150mA, Max. 1A)
Temperature Control Range5°C ~ 35°C
Temperature ControlHeat, Cool, Auto
Mode
Fan ModeLow, Medium, High, Auto, Circulate
Others
Inputs11 × NTC Input, 1 × DI (Dry Contact) for Keycard Switches, Magnet Switches, etc. (Only for Physical Switches or Buttons)
Advanced FeatureFreeze Protection, Fan Delay
(Under Development: Open Window Detection, Local Control Schedule)
Others
LED Indicator1 × SYS, 1 × BLE, 1 × LoRa, 1 × NFC
External Buttons1 × Reboot/Reset Button, 1 × Manual Pairing Button
USB1 × Type-C for Power Supply and Console
Powerbus1 × 2-pin PowerBus Interface for WT401 Communication (Under Development)
Software
ConfigurationMobile App via NFC or Bluetooth® 5.3, Downlink
CommunicationPair with WT401 thermostat via Bluetooth
Advanced FeatureMulticast, FUOTA
(Under Development: Threshold Alarm, External Sensor Mode, Data Storage (1,000 Entries), Data Retransmission, Data Retrievability, Milesight D2D Controller & Agent, Milesight D2D Data Receiving)
Physical Characteristics
Power Supply21. 24V AC (@ Typ. 150mA, Max. 1A) by Wire Terminals (RC+C)
2. 5V DC by Type-C Port
Operating Temperature-20°C ~ 60°C
Relative Humidity0% to 95% (Non-condensing)
Ingress ProtectionIP30
Material & ColorABS (UL94 V2), Black
Dimension120 × 60 × 20.5 mm
InstallationWall Screws Mounting, 3M Tape Mounting

1: The features for NTC input and DI are under development.
2: The controller must be powered by 24VAC if it pairs with WT401 thermostat via PowerBus.

Thermostat Feature
CompatibilityWork with most HVAC systems via LoRaWAN®
Work with PTAC (2H/1C), AC & Furnaces (1H/1C) or Heat Pumps (2H/1C) via Milesight UC711 HVAC controllers
Work with Common Air Conditioners or PTAC systems via Milesight UC7011 AC controllers
Work with Radiators via Milesight WT101/WT102 thermostat
Temperature Control Mode2Heat, EM (Emergency) Heat, Cool, Auto, Dehumidify, Ventilation
Fan Mode2Low, Medium, High, Auto, On, Circulate
Advanced FeatureLocal Control Schedule
Sensor
Temperature 
Operating PrincipleDigital CMOSens® technology (MEMS)
Range-20°C ~ 60°C
AccuracyTypical ± 0.2°C, Maximum ± 0.5°C
Resolution0.1°C
Humidity 
Operating PrincipleDigital CMOSens® technology (MEMS)
Range0% - 100% RH
AccuracyTypical ± 2% RH, Maximum ± 5% RH
Resolution0.5% RH
Occupancy Detection 
Operating PrinciplePIR
Detection Area120 ° Horizontal, 90 ° Vertical
Detection DistanceMaximum 6 m
Wireless Transmission
TechnologyLoRaWAN®
AntennaInternal Antenna
FrequencyIN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power16dBm (868MHz)/22 dBm (915 MHz)
Sensitivity-137dBm
ModeOTAA/ABP Class A/Class C
Others
Display2.7-inch Black&White E-ink Screen
Buttons5 Buttons for Power On/Off, Reset, System On/Off, Temperature Up/Down, Temperature Control Mode, Fan Mode, etc.
LED Indicator1 x Power/Reset Indicator
USB1 × Type-C for Power Supply or Console
Power Connector1 × 2-pin Power Terminal Connector (PowerBus)3
Software
Power On/OffButton, Mobile App via NFC
ConfigurationMobile App via NFC or Bluetooth® 5.0, Downlink
Advanced FeatureOccupied Detection, Smart Display, Child Lock, Button Customization, External Sensor Mode, Multicast, FUOTA
Physical Characteristics
Power Supply41. 2 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries
2. 24V DC/AC by Power Connector
3. 5V DC by Type-C Port
4. Powerbus3 (24V DC) by Milesight UC711 Controller
Battery Life5LoRa Mode (10 min report interval):
Class A: Around 5 years (SF7), Around 3 years (SF10)
Class C: Around 25 days
LoRa + BLE Mode (1440 min report interval + 2 min BLE transfer interval):
Class A: Around 3.5 years
Class C: Around 25 days
Operating Temperature-20°C ~ 60°C (E-ink Screen: 0°C ~ 40°C)
Relative Humidity0% to 95% (non-condensing)
Ingress ProtectionIP30
Material & ColorPC + ABS (UL94 V0), White (Black Customizable)
Dimension86 × 86 × 24 mm
InstallationWall Screw Mounting, 86mm Square or European 60mm Round Box Mounting, 118 or 120 Wall Box Mounting via Wall Plate Accessories
Approvals
RegulatoryCE, FCC

1: Milesight UC701 AC controller is under development.
2: The temperature control mode and fan mode are decided by the Milesight HVAC controller when WT401 is pairing with it.
3: The PowerBus connector is only used for power supply, communication feature is under development.
4: These power supply options can not be used at the same time.
5: The battery life is tested under laboratory conditions and for guideline purposes only.

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