Our Grade 3 contacts are suitable for a wide range of applications. We have a new universal heavy duty roller shutter contact that comes pre-resistored with type A and B. Surface contact SC570 which is available in 2 versions, a standard and a multi - resistored version which comes pre- installed with a complete selection of end-of-line resistors for your convenience. We have now also released a new flush contact which is available with resistor values for type A and B.