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Milesight WT401 wireless LoRaWAN HVAC thermostat with e-ink display and PIR
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Milesight WT401 wireless LoRaWAN HVAC thermostat with e-ink display and PIR

WT401

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Wireless Smart Thermostat

LoRaWAN wireless thermostat with a 2.7-inch e-ink display, PIR presence detection and flexible battery or wired power.

Features

  • Controls HVAC via Milesight controllers: furnaces, AC, heat pumps, boilers, PTAC
  • Works with radiators via WT101/WT102 thermostats
  • 2.7-inch black & white e-ink display
  • PIR sensor for presence-based energy saving
  • Built-in temperature and humidity sensor
  • 8 working plans, manual or automatic
  • Child lock and anti-theft installation
  • Multicast, FUOTA, BMS via Milesight gateways

Hardware

  • Battery (2 x ER14505), 24V AC/DC, USB-C 5V or PowerBus
  • Up to ~5.2 years battery life (Class A)
  • 5 external buttons, power/reset LED
  • NFC and Bluetooth 5.0 configuration
  • IP30, PC + ABS, white, 86 x 86 x 24 mm
  • Wall / 60/86/118/120 mm box mounting

Applications

Wireless HVAC and radiator control in offices, hotels, stores and public buildings.

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    Description

    WT401 Description

    Overview

    The WT401 is a LoRaWAN wireless smart thermostat that supports a wide range of heating and cooling systems through BMS systems or paired Milesight HVAC controllers. It offers multiple temperature and fan modes for precise temperature adjustment in buildings.

    E-Ink Display & Sensing

    A 2.7-inch black-and-white e-ink screen continuously shows room status, while the embedded temperature and humidity sensor monitors the ambient environment for accurate control.

    Presence-Based Energy Saving

    An onboard PIR sensor detects human presence to drive energy-saving temperature control, automatically adapting the room to occupancy.

    Flexible HVAC Integration

    The WT401 works with most HVAC systems via Milesight UC7111 controllers and with radiators via the WT101/WT102 thermostats, supporting eight working plans with manual or automatic adjustment.

    Flexible Power & Installation

    Battery, 24V AC/DC, USB-C or PowerBus options enable wire-free or wired installation, with mounting for walls and 60/86/118/120 mm boxes via wall-plate accessories.

    Management

    NFC and Bluetooth 5.0 enable one-touch configuration, while multicast and FUOTA support bulk control and remote firmware updates over standard LoRaWAN networks.

    Industry Applications

    WT401 Industrial Applications

    Hospitality

    Hotels use the WT401 for wireless guest-room climate control, with PIR presence detection cutting energy use in unoccupied rooms and child lock protecting settings.

    Commercial Buildings

    Offices and stores control HVAC via Milesight controllers and BMS integration, with the e-ink display giving clear room status at a glance.

    Radiator Retrofit

    Paired with WT101/WT102 thermostats, the WT401 acts as a central wall control for radiator heating without rewiring.

    Energy Management

    Presence-aware control plus temperature and humidity sensing reduce energy consumption, and LoRaWAN backhaul feeds data into energy-management platforms.

    Specifications

    Wireless Transmission

    Technology LoRaWAN®
    Antenna Internal antenna
    Frequency IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
    Tx Power 16 dBm (868 MHz) / 22 dBm (915 MHz)
    Sensitivity −137 dBm
    Mode OTAA/ABP Class A / Class C

    Thermostat Feature

    Compatibility Most HVAC systems via LoRaWAN®; PTAC (2H/1C), boilers, furnaces or heat pumps (2H/1C) via Milesight UC7111 HVAC controllers; radiators via Milesight WT101/WT102 thermostats
    Temperature Control Mode Heat, EM (emergency) heat, cool, auto
    Fan Mode Low, medium, high, auto, on, circulate
    Advanced Feature Local control schedule

    Sensor

    Temperature Range −20 °C ~ 60 °C
    Temperature Accuracy Typical ± 0.2 °C, maximum ± 0.5 °C
    Humidity Range 0% ~ 100% RH
    Humidity Accuracy Typical ± 2% RH, maximum ± 5% RH
    PIR Detection 120° horizontal, 90° vertical; max. 6 m
    Operating Principle Digital CMOSens® technology (MEMS)

    Others

    Display 2.7-inch black & white e-ink screen
    Buttons 5 buttons: power on/off, reset, system on/off, temperature up/down, mode switch, fan mode
    LED Indicator 1 × power / reset indicator
    USB 1 × Type-C for power supply or console
    Power Connector 1 × 2-pin power terminal connector (PowerBus)

    Software

    Configuration Mobile app via NFC or Bluetooth® 5.0, downlink
    Advanced Feature Occupied detection, smart display, child lock, button customization, external sensor mode, multicast, FUOTA

    Physical Characteristics

    Power Supply 2 × 2700 mAh ER14505 Li-SOCl2 replaceable batteries; AC/DC 24V via power connector; DC 5V via Type-C; PowerBus (DC 24V) via Milesight HVAC controller (not simultaneous)
    Battery Life Class A up to 5.2 years (SF7, EU868); Class C around 25 days (10 min report interval)
    Operating Temperature −20 °C ~ 60 °C (e-ink screen: 0 °C ~ 40 °C)
    Relative Humidity 0% ~ 95% (non-condensing)
    Ingress Protection IP30
    Material & Color PC + ABS (UL94 V0), white
    Dimensions 86 × 86 × 24 mm
    Installation Wall screw mounting; 86 mm square or European 60 mm round box; 118/120 wall box via wall-plate accessories
    Order Codes

    Order Codes

    SKU: WT401

    WT401 – LoRaWAN wireless smart thermostat with 2.7-inch e-ink display, PIR presence detection, built-in temperature and humidity sensor, and battery or wired power.

    Specify the LoRaWAN frequency band (EU868, US915, AS923, etc.) when ordering. Wall-plate accessories are available for 118/120 mm boxes. Pair with Milesight UC7111 HVAC controllers or WT101/WT102 radiator thermostats as needed.

    Order by referencing the SKU – contact info@easynt.com

    Downloads

    Downloads and Datasheets

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