Capacitive push button  Square TMD 4 Buttons  & Temp probe - Silver

Capacitive push button Square TMD 4 Buttons & Temp probe - Silver

Product code: ZVISQTMD4S
Square TMD is a KNX switch with capacitive buttons, ,allowing you to select the function of each button and also includes thermostat function, internal temperature probe and two analogue/digital inputs.
Price (Excluding GST)


  • Standard design.
  • 4 touch areas.
  • 2 analog/digital inputs.
  • No power supply different from the bus needed.
  • Thermostat.
  • Temperature sensor.
  • Status LED indicators.
  • Custom LED luminosity.
  • KNX BCU integrated.
  • Magnetic fit with security mechanism to avoid accidental extraction. Metallic stand included.
  • Complete data saving in case of power failure.
  • CE directives compliant.

Zennio Thermostats:

Technical Details


General System Specifications

  • KNX Power Supply: 29VDC
  • KNX Current Consumption: 6mA @ 29VDC
  • Operating temperature: 5 ¡C to 40 ¡C
  • Assembly: Vertical or horizontal position.   See example in "installation and connection diagram" 
  • Minimum Clearances: Keep away from heat and cold air flows to get better temperature sensor measurements.
  • Response to Bus Voltage Failure: Complete data saving. 
  • Response to bus failure recovery: Data recovery
  • Accessories: RJ45 cable connector (included). Mini USB A-B cable Ref. ZN1AC-UPUSB (not included)

Input Connections

  • Number of inputs per common: 2
  • Input voltage:  +3.3V DC for the common (do not connect external voltage into the inputs in any case)
  • Input current:  1.0mA @ 3.3V DC (each input)
  • Input impedance:  Approx. 3.3k ½
  • Switching type: Dry voltage contacts between input and common
  • Connection method: Cable screw terminal and matching socket 
  • Max. cable length: 30 m.
  • NTC probe length: 10.5m. (extendable up to 30m.) 
  • NTC accuracy (@ 25 ¡C):  0.5 ¡C
  • Temperature measure precision: 0.1 ¡C
  • Cable cross-section: 0.15 mm to 1 mm
  • Response time: Max 10ms



Technology KNX
Design range ZENNIO Touch My Design Square
Finish Silver
Switch action Capacitive Touch
Mounting Flush
Back Box Round European
Buttons 4
Inputs 2
Input voltage KNX Bus (29VDC)
HVAC support Temperature Sensing + Regulation
Status LED's White
Buscoupler Integrated
IP rating IP20
brand ZENNIO

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