A huge variety of options available, manufactured to comply with BS EN 50131- 2- 6 Grades 1, 2 and 3. An enhanced range of Grade 3 variants with selectable resistor will make stockholding easier for distributors and enable installers to keep one version in the toolbox rather than one per panel. Variations of all contacts to include pre-fitted resistors are also available. If you can't see what you want then ask us.