GE 51107 Smart Home Wireless Alarm System Kit $23 at Amazon

Amazon has the GE 51107 Smart Home Wireless Alarm System Kit for $23 with free shipping on order $25 or more. Home Depot has it for $20 with free shipping on $45+. Features 120-Decibel alarm, 4-digit keypad for arming and disarming, and includes three window alarms.