Works in conjunction with the AM-6000 and AM-100 master units or can be used as a master receiving unit in conjunction with any of the Alertmaster sound monitor accessories AM-PXB has a tactile pad for notification anywhere in or around the home, designed specifically for those with visual limitations AM-PXB is worn or carried for notification of household events whether inside, outside or in remote areas of the house, where flashing lamps may not be seen Vibrates for 24 seconds