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CMI TECH

Milesight® WT300 Series LoRaWAN® Smart Thermostat for Fan Coil Units

Milesight® WT300 Series LoRaWAN® Smart Thermostat for Fan Coil Units

Valve Control
$168.00 CAD
$168.00 CAD
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Milesight® WT303/WT304 LoRaWAN® Smart Thermostat 

The Milesight® WT303/304 is an advanced room thermostat designed for Fan Coil Units (FCU), offering comprehensive control and monitoring capabilities. Designed for smart buildings and supports over 1,000 devices per site via LoRaWAN® and intuitive cloud management capabilities.

Key Features:

  • HVAC System Compatibility:
    • Compatible with 2-pipe and 4-pipe Fan Coil Units (FCUs).
    • Supports both 3-speed and ECM (0-10V) fans.
    • Supports 2-wire and 3-wire On/Off relays and 0-10V valve controls.
  • Operational Control:
    • Supports manual operation and scheduled programming.
    • Scene-based control via Milesight® Device-to-Device (D2D) protocol for optimal efficiency. **
    • Integrates with remote management systems.
    • Supports up to 8 plans, each with up to 16 schedules, to meet diverse control needs and improve energy efficiency.
  • Display & Sensors:
    • Equipped with a 2.7" E-ink display for real-time room status updates.
    • Built-in temperature and humidity sensors for accurate ambient condition monitoring.
    • Supports external NTC sensor signal input and a dry contact input for keycard/magnetic switches.
  • Scalability & Data Management:
    • Scales effortlessly to support over 1000 devices per site.
    • Supports Cloud data collection & reporting.
    • Flexible data sources for precise environmental monitoring and control (built-in sensors, Milesight® wireless sensors, external NTC, or third-party sensor data via network servers).
  • Connectivity & Integration:
    • Fully compatible with standard LoRaWAN® gateways and the Milesight® Development Platform.
    • Enables seamless real-time environmental monitoring and efficient remote management.
    • Compatible with BACnet systems via Milesight® LoRaWAN® gateways.
    • Supports Milesight® D2D protocol for low-latency local controls without a gateway.
    • Supports multicast control for efficient bulk device management.
    • Supports Firmware Update Over-the-Air (FUOTA).
  • Energy Saving & Safety:
    • Can be paired with Milesight® light & motion sensor(s) via Milesight® Device-to-Device (D2D) protocol for scene-based controls, enhancing energy savings when spaces are unoccupied.
    • Open-window detection and freeze protection for smart energy management.
    • Child lock function for enhanced safety.
  • Physical Characteristics & Installation:
    • Highly adaptable to different scenarios with support for 60mm/86mm/118mm/120mm wall boxes.
    • Dimensions: 86 x 86 x 42 mm.
    • Color & Material: White, PC +ABS (UL94 V0 Flame Retardancy).
    • Wire Connection: AWG 14-26.

Specifications Overview:

Features WT303 WT304
Compatible Fan Coil 2-pipe and 4-pipe Fan Coil Units (FCUs) with 3-speed fans or EC (0-10V) fans
See Compatibility Checker for more details
Compatible Valve 2-wire or
3-wire
On/Off Motorized Valves		 0-10V Proportional Integral Valves
Valve & Fan Relay Amps * Resistance: 4A, Inductive: 3A
Temperature Control
Range		 5°C ~ 35°C
Temperature Control
Mode		 Heat, Cool, Ventilation
Fan Mode Low, Medium, High, Auto
Inputs 1 × 10k ± 1% 3950 NTC Input
1 × DI (Dry Contact) for keycard switches and
magnetic switches, etc. (only for physical switches or buttons)
Advanced 
Features		 Local Control Schedule; Freeze Protection;
Open-Window Detection; Fan Delay;
Temperature Control and Dehumidify
Temperature
Sensor		 Sensor Type: Digital CMOSens® (MEMS)
Range:      -20°C ~ 60°C
Accuracy: ± 0.5°C (0°C~60°C), ± 1°C (-20°C~0°C)
Resolution: 0.1°C
Humidity
Sensor		 Sensor Type: Digital CMOSens® (MEMS)
Range:     0% - 100% RH
Accuracy: ± 2% RH Typical;  Max. ± 5% RH
Resolution: 0.1% RH
Wireless Protocol LoRaWAN®, Milesight® D2D
915 MHz (U.S. & Canada)
Tx Power 22dBm (915 MHz)
Sensitivity -137dBm
Mode OTAA/ABP Class C
System Display 2.7-inch Black & White E-ink Screen
System Configuration NFC via mobile App, or Downlink commands
Advanced Features Threshold Alarm, Child Lock, Multicast, Milesight® Device-to-Device (D2D) Controller,
Milesight® D2D Agent, External Sensor Mode, Milesight® D2D Sensor Data Receiving, Firmware Update Over-the-Air (FUOTA)
Power Supply 100~240 VAC, 50~60Hz
Power Consumption < 2W (Without loads)
Operating Temperature -20°C ~ 60°C (E-ink Screen: 0°C ~ 40°C)
Ingress Protection IP20
Enclosure Material White, PC +ABS (UL94 V0 Flame Retardancy)
Dimensions 86 x 86 x 42 mm
Wire Connection 14-26 AWG
Mounting 86mm Square or European 60mm Round Box;
118/120mm fitting box mounting via (optional) wall plate accessories

*Capacitive loads are not supported.
** The D2D (Device-to-Device) protocol enables scene-based control among compatible Milesight® devices. When paired with a PIR motion sensor (WS202), it supports energy-saving automation when spaces are unoccupied.
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