BEST OVERALL: YoLink LoRa Smart Window Door Sensors. ↓ Jump to Review. BEST BANG FOR THE BUCK: GE Personal Security Window and Door Alarm. ↓ Jump to Review. UPGRADE PICK: Ring Alarm 5-Piece ...

When placed against a door on the floor, this nifty security device will blare a loud alarm if someone attempts to open the door. 15.99 6% OFF $ 14.99 at Amazon ...