A77-AB2 | System Sensor | Gas & Specialty Sensors

The System Sensor A77-AB adapter rings allow installers to retrofit i3 Series detectors where a larger diameter smoke detector was previously installed. This Adapter ring covers unsightly footprints allowing a new System Sensor direct-wire detector to blend into the acoustical tile without the need for costly ceiling repainting. This simple solution reduces installed costs on fire alarm system retrofits.