Check the listing for details. Serene Innovations CentralAlert CA-PX Receiver / Pager. Condition: New. Listed at 183.95 USD. The CA-PX Wearable Personal Receiver is a personal signaling receiver that's great for notifying an individual by vibration, sound and/or flashing icons. Features:Lightweight and portableBig and easy to see alerting iconsBraille buttonsAlert types include the telephone, cell phone, door sensor, baby cry, audio, motion, NOAA and SOS transmittersOutput jack for bed shaker connection (sold separately)Last alert event recall functionUnique vibration pattern training help users recognize/learn different vibration patterns by feelBright flasher can be used as a flashlight"HOUSE" icon on CA-PX blinks when a low battery is detected in the CA-AX audio sensor"HOUSE" icon on CA-PX has a steady light when the smoke detector sound is activated2.4GHz Smart-Code technologyUp to 200 ft operating rangeSupports up to 10 CA-RX modelsUniversal AC adapter powered with battery backupIncludes 3 AAA NiMH rechargeable batteries for backupDimensions: 3.75" x 4.5" x 1" Includes:CA-PXUSB AC adapterUSB to microUSB charging cable3 AAA batteriesUser guide