CentralAlert Home/Cell Phone Ringer and Flasher Model CA-CXThe CA CX Uses a loud ringer and bright flasher to alert you to incoming landline, cell phone, Skype and FaceTime, call and SMS messages. With its optional bed shaker, you will never miss a call again, even while you sleep. Product Features: Simple to use. Just plug into your landline or park your cell phone on the unit and set it to 'vibrate'. Unique, bright flashing patterns and adjustable ring tones distinguish calls from landlines, cell phones and