MUSE
MUSE is a LoRaWAN module for fan coils and air conditioners. It connects to the unit’s own controller: MUSE-U to the port of the built-in Wi-Fi module and is powered from it, MUSE-R to the RS-485 bus with external power. The module reports mode, setpoint, temperature and faults and, on server commands, switches the unit on and off and changes the mode, setpoint and fan speed. LoRaWAN Class C receives commands at any time, so a building’s fan coils can be brought into BMS without bus wiring. Compatible brands and models are listed in the datasheet.
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Features
- MUSE-U: powered from the unit’s port, no power supply or wiring;
- Reports mode, setpoint, temperature and faults;
- Accepts commands: on/off, mode, setpoint, fan speed;
- LoRaWAN Class C: server commands received at any time;
- Software-selectable 3.3 / 5 V logic levels and line direction;
- BMS integration without RS-485 bus wiring;
- Applications: building-wide fan coil and AC monitoring, retrofits without new cabling, centralized mode and setpoint control, equipment fault monitoring.
Specifications
LoRaWAN regional plans: EU868 · IN865
Interfaces
| MUSE-U interface | UART, 4 lines: TX, RX, IO1, IO2 |
|---|---|
| Direction, per line | input or output, by software |
| Line logic level, V | 3.3 / 5, by software |
| TX / RX swap, inversion | by software |
| Baud rate, baud | 2400 … 115,200 |
| MUSE-R interface | RS-485, point-to-point |
| Termination, Ω | 120, switchable |
Power and construction
| Supply voltage, nominal, V DC | 5 / 12 / 24 |
|---|---|
| Supply voltage range, V DC | 4.5 … 26.4 |
| Operating temperature, °C | −10 … +60 |
| Housing | ABS, white, UL94 HB |
| Housing dimensions, mm | 75 × 35 × 12 |
| Length incl. cable gland, mm | 90 |
| MUSE-U cable length, m | 0.7 |
| Service mode entry | by magnet |
| Mounting | inside the fan coil or air conditioner |
LoRaWAN
| Specification version | 1.0.3 |
|---|---|
| Class, activation | Class C, OTAA |
| Tx power, dBm | up to 14 |
| Sensitivity (SF12), dBm | −136 |
| ADR, encryption | yes, AES-128 |
| Antenna | internal, PCB |
| Radio platform | STM32WLE5 |
Data and control
| Reported data | mode, setpoint, temperature, faults |
|---|---|
| Commands | on/off, mode, setpoint, fan speed |
| Indicators | PWR — power, JOINED — joined LoRaWAN, ACT — activity, LINK — unit communication |
| Package contents | module, connection cable |
Documentation
Datasheets
Versions
| Part number | Version |
|---|---|
| MUSE-U/[F] | UART to the unit’s Wi-Fi module port, port-powered; 0.7 m connection cable. |
| MUSE-R/[F] | RS-485, external power 5 / 12 / 24 V DC, 120 Ω termination. |
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