The Rapier range of sounders are designed to work as part of Intruder systems. This range of stainless steel external sounders fully meet the requirements of EN50131-4:2019 Grade 3 and 4. They include a diagnostic LED which will flash to indicate problems with the sounder, versatile trigger options and comfort LEDs to signal that the device is working. Control panel dependent end of line resistors also help make installation easier. The Rapier sounders can be mounted in portrait or landscape orientation, giving real flexibility. This is now made easier with the inclusion of two internal spirit levels. The stainless steel cover’s clean lines gives a smart and sleek look to the unit.