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Milesight  |  SKU: WT303-868M

Milesight WT303 | LoRaWAN Smart Fan Coil Thermostat (On/Off Valve)

Price incl. 19% VAT
€130,00
Price excl. VAT
€109,24
Shipping calculated at checkout. Shipping policy

The Milesight WT303 is a LoRaWAN fan coil thermostat for 2- and 4-pipe FCUs with a clear e-ink display.

  • FCU control: 2- or 4-pipe units with 3-speed or EC (0-10V) fans.
  • On/Off valves: 2-wire or 3-wire motorized valve control.
  • Connected: LoRaWAN, Milesight D2D, BACnet, schedules, e-ink display.

VAT & Business Purchases

Prices include VAT at the rate of your EU delivery country, so the price shown is the price you pay. EU businesses with a valid VAT number can buy VAT-free: enter your company name and VAT number at checkout and VAT is removed under the intra-community reverse-charge rules. Orders delivered within Cyprus always include Cyprus VAT.

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  • Warranty & Support: Consumer purchases are covered by the 2-year legal guarantee of conformity, and manufacturer warranty terms apply per brand. Our engineering team at shopioT provides technical support.

Delivery and Shipping

Tracked delivery within Cyprus by ACS Courier, and to all EU member states, the United Kingdom and Switzerland by FedEx International Priority. Orders ship from our warehouse in Nicosia, Cyprus, typically within 1–3 business days. Shipping cost is calculated at checkout by destination and parcel weight. See our Shipping Policy for rates and delivery times.

EU business? Enter your company name and a valid EU VAT number at checkout to remove VAT (reverse charge).

Description

The Milesight WT303 is an advanced LoRaWAN fan coil thermostat for air-conditioning systems using 2-pipe or 4-pipe fan coil units (FCUs) with 3-speed or EC (0-10V) fans. It drives 2-wire or 3-wire On/Off motorized valves. It supports manual button control and automatic control via predefined logic, schedules or remote management for optimal comfort and energy efficiency.

A 2.7-inch e-ink display and a built-in temperature/humidity sensor continuously show room status, and it integrates with standard LoRaWAN gateways, BACnet (via Milesight gateways), Milesight D2D and the Development Platform for real-time monitoring and remote management.

Key Features

2-/4-Pipe FCU ControlDrives 2-pipe and 4-pipe fan coil units with 3-speed fans or EC (0-10V) fans for flexible HVAC control.
Valve ControlControls 2-wire or 3-wire On/Off motorized valves for reliable open/close heating and cooling.
2.7-Inch E-Ink DisplayA crisp, low-power e-ink screen shows room temperature, humidity and system status clearly.
Connected & FlexibleLoRaWAN and Milesight D2D, BACnet via Milesight gateways, multicast, FUOTA; 8 plans with up to 16 schedules each.

Typical Applications

•Hotels & offices: per-room FCU control with key-card input and central management.
•Commercial buildings: scheduled heating/cooling and ventilation for comfort and energy savings.
•BMS integration: bring FCU zones into BACnet building-management systems via Milesight gateways.

Technical Integration

•FCU compatibility: 2-pipe and 4-pipe FCUs with 3-speed fans or EC (0-10V) fans
•Valve control: 2-wire or 3-wire On/Off motorized valves
•Relays: Valve & fan relays: 4 A resistive, 3 A inductive (capacitive loads not supported)
•Control: Heat, Cool, Ventilation; fan Low/Medium/High/Auto; temperature range 5-35 °C; 8 plans, up to 16 schedules each
•Inputs & sensing: Built-in temp (±0.5 °C) & humidity (±2% RH) sensor; 1 x 10k NTC input; 1 x DI (dry contact); external sensor mode
•Connectivity: LoRaWAN (EU868, OTAA/ABP Class C) & Milesight D2D; internal antenna; BACnet via Milesight gateways; multicast; FUOTA
•Display & build: 2.7-inch e-ink; 5 buttons; PC+ABS (UL94 V0); IP20; operating -20 to 60 °C
•Power & mounting: 100-240 VAC, 50/60 Hz; < 2 W (no loads); fits 86/60/118/120 mm boxes; AWG 14-26 wiring
•Setup help: For FCU wiring or BACnet integration, contact the shopioT technical team

What's in the Box

1×Smart Fan Coil Thermostat
2×Wall Mounting Screws (M4x25)
1×2-Pin Signal Cable
1×Anti-Theft Fixing Screw (M2x4)
1×Quick Guide
1×Warranty Card

Optional accessories: external NTC temperature sensor and wall plate kit (sold separately).

Frequently Asked Questions

Which FCUs does it support?

2-pipe and 4-pipe fan coil units with 3-speed fans or EC (0-10V) fans.

What valves can it drive?

2-wire or 3-wire On/Off motorized valves.

Can it integrate with a BMS?

Yes - via BACnet through Milesight LoRaWAN gateways, plus Milesight D2D, multicast and the Development Platform.

How is it powered and mounted?

100-240 VAC mains, in an 86/60/118/120 mm wall box (wall plate optional).

Specifications
  • Primary Communication Protocol
    LoRaWAN, Milesight D2D
  • Frequency/Region
    EU868
  • Antenna Type
    Internal
  • LoRaWAN Class
    Class C
  • Radio & Range

    TX power: 16 dBm (EU868)

    Sensitivity: -137 dBm

  • Interfaces (I/O)
    Digital Input (Dry Contact), Digital Output (Relay), Analog Output (0-10V), USB Type-C, Button
  • Configuration Method
    NFC, Downlink
  • Activation Method
    OTAA, ABP
  • Monitoring Parameters
    Temperature, Humidity
  • Measurement Technology

    Temperature / humidity: MEMS CMOSens

  • Measurement Range

    Temperature: -20°C to +60°C

    Humidity: 0–100% RH

    Temperature control range: 5–35°C

  • Measurement Accuracy

    Temperature: ±0.5°C (0–60°C), ±1°C (-20–0°C)

    Humidity: typ. ±2% RH, max. ±5% RH

  • Measurement Resolution

    Temperature: 0.1°C

    Humidity: 0.1% RH

  • Power Source
    Mains (AC)
  • Power Input
    100–240 VAC, 50/60 Hz
  • Power Consumption
    < 2 W (without loads)
  • Dimensions
    86 × 86 × 42 mm
  • Enclosure Material
    ABS+PC
  • Mounting Options
    In-wall
  • IP Rating
    IP20
  • Environment Rating
    Indoor
  • Operating Temperature
    -20°C to +60°C
  • Certifications
    CE, FCC
  • Warranty
    2 Years

Document Library

WT303 Datasheet

WT303 User Manual

Payload Decoder

Firmware & SDK Download

Payment & Security

Payment methods

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  • Maestro
  • Mastercard
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  • MobilePay
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  • Union Pay
  • Visa

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