The Interra iXM Switch is the no-LCD aluminium keypad branch of the ITR333 KNX Secure room-controller family. Coding ITR333-X1 X2 X3 X4 with X1=0 (no LCD / no AQI), X3=1 (aluminium) and finish digit X4. Button count X2 is 8 → ITR333-081x or 2 (= 12 buttons) → ITR333-021x. Without a display, independently controllable functions are limited to the physical buttons; temperature, humidity and ambient-light sensing remain available for bus feedback and thermostat-extension objects.

Bus-powered at about 20 mA (ITR333-0XXX), KNX Secure / S-Mode, single shared ETS database for the whole iXM family. Typical mechanical outline for switch-only models is 86 × 94.3 × 11.7 mm. For LCD thermostat variants with up to 96 on-screen functions see iXM Thermostat; classic rocker range: iSwitch+ Aluminium.

Key Features — iXM Switch (8 / 12)

• KNX Secure keypad: ETS commissioning; shared .knxprod with LCD siblings.
• 8 or 12 buttons: Switch, dim, shutter, scene, RGB, mode, sequences, etc.
• Six aluminium finishes: Natural, black, bronze, gold, rose gold, anthracite.
• ~20 mA bus: No auxiliary PSU; compact 86 × 94.3 × 11.7 mm body.
• Room sensing: Temperature (±0.2 °C) and humidity (±2 %RH); lux to 1800.
• Variant docs: Interra lists separate datasheet links for 8-btn vs 12-btn pages.

Order Codes

Select finish and button count above for the live SKU. All variants below are aluminium (X3=1), no LCD (X1=0).

Finish (X4)	8 buttons (081x)	12 buttons (021x)
Aluminium Natural	ITR333-0810	ITR333-0210
Aluminium Black	ITR333-0811	ITR333-0211
Aluminium Bronze	ITR333-0812	ITR333-0212
Aluminium Gold	ITR333-0813	ITR333-0213
Aluminium Rose Gold	ITR333-0814	ITR333-0214
Aluminium Anthracite	ITR333-0815	ITR333-0215

At a Glance

Specification	Detail
Family	ITR333 iXM — Switch (no LCD)
Buttons	8 (X2=8) or 12 (X2=2)
Bus current	~20 mA (ITR333-0XXX)
Sensors	Temperature, humidity, ambient light
Dimensions	86 × 94.3 × 11.7 mm (switch outline)
Protection	IP20 · −5…45 °C
Configuration	ETS S-Mode · KNX Secure · shared database

Applications and Related Products

• Corridor / guest-room tactile control: Dense Secure keypad without a screen.
• LCD + thermostat UI: iXM Thermostat 4/8 (ITR333-14xx / 18xx).
• Larger glass UI: iX10, iX3, iX4.
• iSwitch+ rockers: iSwitch+ Aluminium.

Choosing and Commissioning

Choose 8 vs 12 buttons and aluminium finish; both use the same ETS product file as LCD iXM models. Download the matching Interra datasheet link (8-btn or 12-btn page) plus the shared manual under Downloads. Mount in dry interiors (IP20); program Secure credentials per project policy.