Key vent button


The SLT 42A-SD has the same applications as the SLT 42U-SD, but is used for surface-mounted installation.
Product NamePriceQty

Performance features

  • For manually opening and closing a ventilation group in conjunction with D+H SHEV or ventilation control panels
  • Function: Ventilation OPEN / CLOSED via key operated changeover contact
  • With integrated LED readout OPEN
  • Profile semi‑cylinder not included in scope of supply

Technical Data

Input voltage DC 24 V DC
Type of protection IP 54
Housing Aluminium
Colour Light grey
W x H x D 70 x 90 x 65 mm
Weight 0.45 kg


TypeArt. No
SLT 42-A-SD30.400.40

Approvals / Certificates


SLT 42A-SD - Key-operated vent switch (26.52KB)

LT 84, SLT 42 - Vent buttons (106.89KB)

SLT 42A-SD - Key-operated vent switch 24V (564B)

LT 84 / LS 84 / SLT 42 - Ventilation button (807.51KB)
LT 84 / LS 84 / SLT 42 - Ventilation button (858.24KB)


D+H service and sales partners

The expansive D+H service and sales partner network offers property-based planning and consulting, proper installation, careful maintenance and reliable supply with spare parts.

Select your country and enter- if required - your postal code:

False input

Are you looking for initial information about our products? Quickly and easily order our new product catalogue.

Would you like to flip through our catalogue? Please click here!

CAPTCHA image for SPAM prevention If you can't read the word, click here.
* Mandatory fields

Certified by: