The SS3-E053 is an orange, three-position key switch from STI, clearly marked “Smoke Vent.” Designed with dual-mount capability, it can be installed in either flush or surface-mounted applications. A 35 mm black surface back box is included as standard.
Part of a highly versatile and attractively designed range, these key switches combine quality, functionality, and value. Models are available with or without a protective cover or pre-alarm option, making them suitable for a wide range of smoke ventilation and specialist control applications.
These aesthetically designed low- and high-voltage switches fit standard UK-type switch socket boxes and are quick and easy to install, providing both flexibility and reliability in installation.