MST’s Point-of-Attachment system is an air distribution system that will alarm when the supplied air falls below a preset air pressure setting. The pressure setting is designated in the model number. When the inlet air pressure to the POA falls below the preset level specified in the model number, a pressure switch connects the internal 9 volt transistor battery to the alarm (rated 119 dB(A). The alarm will continue to operate until the pressure in the system exceeds the preset level.
