Integrated temperature sensor
Onboard room-temperature monitoring on every thermostat, selected as the default reading source.
SmartAPEX wired room control APX-TCA · APX-CD
Smart Thermostatic Switch
One shared faceplate platform, wired for AC or DC. Crystal glass or Classic metal on top — the same fan-coil, valve and temperature control underneath, a different finish for the room.
Integrated temperature sensor Fan-coil + valve control (AC) AC or DC back-unit
Classic metal · installed, digital display live
One electronic platform
A shared back-unit. A faceplate you choose per room.
Every thermostat is built from two parts. The back-unit is the part that goes into the wall box and decides how it’s powered, wired and which loads it drives. The faceplate is what the room sees — and it doesn’t change the control logic underneath.
Step 1 — pick the back-unit
- AC back-unit (APX-TCA) — 3-speed fan-coil outputs plus a valve output
- DC back-unit (APX-CD) — low-voltage, dry-contact inputs, no local relay outputs
- Every back-unit takes either an external NTC 10K probe or an external IR probe — the accessory is model-specific, not interchangeable
+
Step 2 — pick the faceplate
- Crystal — glass finish, four fixed touch positions with interchangeable icons
- Classic — metal finish, fixed icon layout
- Same 86 × 86 mm mechanical footprint either way, with a digital temperature display on both
Faceplate gallery
Two faceplates, one platform.
Crystal glass and Classic metal on the shared 86 × 86 mm back-unit platform. Renders below are from the product manual pending real photography — finish/colour options are not yet confirmed for this line.
Crystal
Glass faceplate, four fixed touch positions with interchangeable icons.
Classic
Metal faceplate, fixed icon layout.
Thermostat intelligence
Six things every CAN thermostat does.
Regardless of finish or back-unit, every SmartAPEX CAN thermostat shares the same six capabilities.
Selectable temperature source
On standard models, touch and hold the two upper buttons for 6 seconds to switch between internal and external NTC sensing. Not available on -IR models.
Firmware update over CAN-BUS
Serviced through a compatible SmartAPEX CAN controller — no faceplate removal required.
3-speed fan-coil + valve
AC back-unit: Q1 low, Q2 medium and Q3 high fan outputs, plus a dedicated Q4 valve output.
Model-specific accessory
Standard models take an external NTC 10K probe; -IR models take an external IR probe instead — never both on the same unit.
Shared 86 × 86 mm faceplate
Crystal and Classic faceplates use the same mechanical platform as the SmartAPEX keypad line.
Evening
Night Mode
Cooking
Curtains
22°C
Auto
4 fixed positions · icons as ordered
Configurable icon presentation
Make every touch position clear.
Personalization at your fingertips: the four Crystal icon positions are interchangeable, with alternative icons available via the SmartAPEX icon-selection sheet before ordering.
Model-specific, not interchangeable: standard models take an external NTC 10K probe; models ending in -IR take an external IR probe instead — connect only the accessory supported by the purchased model.
Lighting5 of 40+
Scenes5 of 40+
Rooms & curtains5 of 40+
Crystal’s four touch positions are fixed — only the icon inserts and diffusers at each position are interchangeable. Icon selection changes the interface, not the electrical rating.
Back-unit specifications
One visible thermostat. Two wiring approaches.
Select the back-unit from the project’s electrical requirements first, then specify the Crystal or Classic faceplate on top. AC and DC versions drive different loads and have different terminals.
AC back-unitAPX-TCA
Fan-coil and valve control
Mains-powered installations driving a 3-speed fan-coil motor and a curtain-style 2-way valve actuator.
110–240 VAC, 50/60 HzQ1 low, Q2 medium, Q3 high fan outputsQ4 valve output400 W rated per switched lineH / L — CAN-bus pairG / I — model-specific NTC 10K or IR probe
DC back-unitAPX-CD
Low-voltage inputs and sensing
Low-voltage room interfaces using dry-contact inputs — the same DC back-unit shared with the keypad line.
12–24 VDC, ~100 mADI1 / DI2 dry-contact inputsH / L — CAN-bus pairG / I — model-specific NTC 10K or IR probeNo local relay outputs
Electrical installation and load selection must follow the exact product manual and be completed by a qualified professional. Full wiring diagrams for both versions are in the manual, not reproduced here.
Installation
Prepare the thermostat and fit it correctly.
Isolate power before wiring, servicing or changing the back-unit or faceplate. Follow the exact AC or DC wiring page in the manual.
1
Select AC or DC back-unitThe mechanical frame is shared; the electrical board and pinout are different.
2
Wire the back-unitFollow the exact terminal diagram for the selected version.
3
Connect the model-specific G / I accessoryStandard model: external NTC 10K sensor. Model ending in -IR: external IR probe.
4
Fit icons and diffusersCrystal model only: press each diffuser and icon insert fully into position.
5
Attach the faceplateKeep it parallel to the wall and press or release only at the corners.
6
Power-cycle onceAfter final assembly, switch power off and on once to establish the capacitive baseline.
Glass faceplate kit
Icons and diffusers included
Total in box8 pieces
Faceplate removal: push / release only at the corners. Keep it parallel to the wall — do not insert a tool against the visible edge, and do not twist or flex it.
Product overview
Smart thermostatic switch at a glance.
FaceplatesCrystal glass or Classic metal, shared mechanical platform
Footprint86 × 86 mm
InteractionDigital temperature display, power, fan-speed and setpoint touch controls
TemperatureIntegrated sensor, switchable to external NTC 10K probe on standard models
ProtocolWired SmartAPEX CAN-bus
External accessoryModel-specific: NTC 10K probe (standard) or IR probe (-IR models)
Back-unitsAPX-TCA (AC, fan-coil + valve outputs) or APX-CD (DC, dry-contact inputs)
SpecificationConfirm exact product code, loads and accessory compatibility before ordering
Product manual
Install and commission with the exact technical guide.
The manual covers Crystal and Classic faceplate preparation, AC and DC back-unit wiring for fan-coil, valve and dry-contact applications, model-specific NTC/IR accessory selection and technical limits — the authoritative source for anything electrical.