Surface-mounted authorised-user control
The SLT 42-A provides keyed OPEN / CLOSED operation for one ventilation group in conjunction with compatible D+H smoke ventilation or natural ventilation control panels. Its surface-mounted aluminium housing is suited to operating points where a flush-mounted switch is not the preferred arrangement.
The key-operated changeover contact restricts routine operation to authorised users, facilities staff or nominated building personnel.
Key functions
- OPEN / CLOSED operation through a key-operated changeover contact;
- 24 V DC input;
- surface-mounted aluminium housing;
- IP54 protection; and
- PHZ 28 profile half-cylinder selected separately.
Technical data
| Input voltage | 24 V DC |
|---|---|
| Function | OPEN / CLOSED through a key-operated changeover contact |
| Protection | IP54 |
| Housing | Aluminium |
| Colour | Light grey |
| Dimensions | 75 × 75 × 52 mm |
| Weight | 0.45 kg |
| D+H article number | 30.400.30 |
Selection and coordination
Use the SLT 42-A where keyed local operation and a robust surface-mounted enclosure are required. Confirm the controller input, device location, key management, group assignment, labelling, field wiring and override priorities as part of the complete control-system design.
The PHZ 28 profile half-cylinder is not included with the switch and must be allowed for separately.
EBSA New Zealand support
EBSA NZ can coordinate the SLT 42-A with the selected D+H control panel, connected window or louvre drives, field wiring and the required operating sequence.
