The 5151 thermal detector meets the needs for applications where rapid response is vital and rapid temperature increases would only be caused by a fire emergency.
FZM-1 is a standard-sized module used to monitor and supervise compatible two-wire, 24 volt, smoke detectors on a Class A (Style D) or Class B (Style B) circuit.
Economic introduces a bi-directional projection speaker model HN-PBM20A/ in strong plastic cabinet and metal grille. It is 20W, cost-efficient speaker, provides high sound output in a wider area. it i