4 Button 2 Gang Select KNX Keypad Stainless Steel with RGB LED and RTC
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  • Lithoss logo
  • Lithoss designed switches
  • Lithoss logo
  • Lithoss logo

4 Button 2 Gang Select KNX Keypad Stainless Steel with RGB LED and RTC

Product code: NiK2K201
This contemporary Lithoss Select 2 gang keypad in stainless steel has 4 buttons with a RGB status LED, along with a temperature sensor integrated in the metal frame ensuring it stays in every way discrete.
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Button main functions: 

  • 1 bit commands: load activation / deactivation commands (ON/OFF/TOGGLE) with short press or with differentiation of long and short press
  • 1 byte commands (unsigned 0-255 or HVAC commands or value % commands)
  • Sending of long action telegrams on the same address of short action or on a different group address
  • Cyclic sending
  • Sequences (3 commands mixing 1bit/1byte objects) with different group addresses
  • Edges for 1 bit / 1 Byte / sequences
  • Dimmer management (with single or double push-button)
  • Blind / Roller Shutter management (with single or double push-button)
  • Scene management 
  • RGB LED colour per button (orientation light, feedback activation by button or ext. input object) 

Temperature sensor main functions: 

  • Temperature sensor calibration
  • Temperature cyclical sending
  • 2 different temperature thresholds to trigger 1 bit telegrams alarm/warning
  • Enable / disable of alarm/warnings via 1 bit object 

Analog inputs (as thermostat) main functions: 

  • Temperature sensor calibration 
  • Different control algorithms: 2 point on/off; PWM; Continuous Control / Fan Coil Control 
  • Different setting modes: via HVAC automatic / via HVAC Manual / via Setpoint
  • Window contact function
  • Additional external temperature sensors (optional)

Technical Details


  • Bus Voltage: KNX Bus 21...30VDC
  • Max Bus Current Consumption: 4mA
  • Optionally 1 external probe can be installed with specs:
    • NTC temperature probe
    • Type A from -20°C to +100°C (ACC003)
    • Type B (from -50°C to +60°C) (ACC004)
    • Max. length of Connecting Cable: ≤ 10 m (twisted cable)
    • Via Push connector



Technology KNX
Design range LITHOSS Select
Finish Stainless Steel
Switch action Push Button
Gangs 2 Gang
Mounting Flush
Back Box Round European
Buttons 4
Operating voltage KNX Bus (29VDC)
HVAC support Temperature Sensing + Regulation
Status LED's Fixed RGB Colours
Buscoupler Integrated

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