Active siren box for Yale HSA6000 series alarm: HSA6400, HSA6200 etc (25/3)
For HSA6000 series alarm only, such as HSA6200, Essential Alarm, HSA6300, HSA6400, HSA6410, HSA6600, HSA6610 etc. Yale active siren box for HSA6000 series alarms. 105db loud siren. Active HSA siren box.