The Belimo 22RT-5900D is a wall-mount active room sensor measuring Temperature with NFC commissioning for tap-and-configure setup via the Belimo Assistant App and an MP-Bus channel for digital network integration. The high-contrast ePaper touch display (2.72 x 2.44 inch) provides on-device readout of all measured values and direct setpoint adjustment by the occupant — no smartphone required. The sleek white (RAL 9003) housing matches commercial interior finishes and mounts to a single-gang box or flat to drywall.
Key Features
NFC Commissioning
Tap a smartphone with the Belimo Assistant App to read or write any configuration parameter — output scaling, measuring ranges, setpoint limits — without connecting to a panel or BAS. Slashes commissioning time on multi-room installations.
MP-Bus Digital Channel
In addition to analog outputs, the device acts as a node on Belimo's MP-Bus network (up to 8 standard or 16 special nodes per master), allowing digital readout and configuration from compatible Belimo controllers.
ePaper Touch Display
2.72 x 2.44 inch high-contrast ePaper touch screen shows live values for all measured parameters. Occupants tap directly on the display to nudge the temperature setpoint. Optional 4-digit access code blocks unauthorized adjustments.
Selectable V Outputs (NFC)
2x analog output channel(s), each NFC-selectable between 0-5 V, 0-10 V, and 2-10 V. Factory default is 0-10 V. Min. controller input impedance 5 kΩ.
Configurable Setpoint Range
Define how far the occupant can shift the setpoint above or below the BAS schedule. All limits, scaling, and offsets are configurable via the Belimo Assistant App or BAS object writes — no DIP switches, no jumpers.
Universal 24 V Power
AC/DC 24 V (19.2-28.8 V) supply tolerance. Spring-loaded terminals accept 0.25-1.5 mm² conductors with back, top, or bottom cable entry — flexible mounting for both new construction and retrofit.
Technical Specifications
| Specification | |
|---|---|
| Measured Values | Temperature |
| Output Signal | 2x Selectable 0-5 V / 0-10 V / 2-10 V (NFC selectable, factory 0-10 V) |
| Communication | NFC + MP-Bus |
| Temperature Range | 32...122°F [0...50°C] (default, configurable) |
| Temperature Accuracy | ±0.3°C @ 25°C [±0.5°F @ 77°F] |
| Display | ePaper Touch Display + LED |
| Setpoint Adjustment | Yes (via Display App or ePaper touch) |
| Nominal Voltage | AC/DC 24 V |
| Voltage Range | 19.2...28.8 V (AC or DC) |
| Power Consumption | 1 VA AC / 0.5 W DC |
| Electrical Connection | Spring-loaded terminal 0.25-1.5 mm² |
| Cable Entry | Back, top, and bottom side |
| Housing | PC, white, RAL 9003 |
| Protection | IP30 / NEMA 1 |
| Ambient Temperature | 32...122°F [0...50°C] |
| Ambient Humidity | Max 95% RH, non-condensing |
| Storage Temperature | -40...160°F [-40...70°C] |
| Display Size | 2.72 x 2.44 in [69 x 62 mm] ePaper touch |
| Certifications | UL/cULus per UL60730-1, IEC/EN 60730-1, CE, ISO 9001 |
| Warranty | 5 Years |
Documentation
Frequently Asked Questions
What does the 22RT-5900D actually measure?
The 22RT-5900D measures temperature. All values are available simultaneously over nfc + mp-bus.
How do I select the output voltage range?
Tap a smartphone running the Belimo Assistant App to the sensor's NFC zone, choose 0-5 V, 0-10 V (factory default), or 2-10 V, and write back to the device. No DIP switches required.
How does the occupant change the setpoint?
The ePaper touch display shows the current setpoint and accepts touch input directly on the device. An optional 4-digit access code can be enabled to prevent unauthorized changes, and the BAS can constrain how far the setpoint may deviate from the schedule.
What's the power requirement?
AC/DC 24 V nominal (19.2-28.8 V tolerance). Power consumption is 1 VA AC or 0.5 W DC. Use Class 2 supply per UL60730-1; cable type CL2 or higher for USA/Canada installations.
How does this mount?
PC housing in white RAL 9003 mounts directly to a single-gang electrical box (back-side cable entry) or flat to drywall (top or bottom cable entry). Spring-loaded terminals accept 0.25-1.5 mm² conductors — no screws to overtighten.
- Sensor Type:
- Wall Mount
- Temperature Element:
- Transmitter
- Supported Protocols:
- NFC/MP-Bus
- Humidity Element:
- None
- CO2 Element:
- None
- Setpoint:
- Setpoint
- Override:
- No Override
- Display:
- ePaper Display
- Material:
- Plastic
