The Shimpo Filter Pulse Bracket is a Filter Pulse sensor bracket for use with 1-, 2-, 4.5- or 5-inch filters and a filter pulse controller. The Filter Pulse patented optical filter sensor for HVAC systems notifies when an air filter is dirty and requires replacement. Utilizing its infrared sensing technology, the Filter Pulse operates independently from airspeed fluctuations and pressure changes in the HVAC system which is not possible with pressure sensing instruments. This technology’s performance enables the Filter Pulse to be the only device that produces an accurate detection of replacement status on a variety of capacity filters, across all brands, in complex to simple HVAC systems.