Wireless Door And Window Alarm With Chime - Set Of 8 Dimension: 1 x 10 x 6.7 inchs., Weight: 0.4lbs. The wireless alarm/chime can be attached to any window, door or cabinet in your home. It is easy to install as no tools are required. Simply remove the double-sided adhesive tape and mount the unit to a door or window. Either the alarm or chime, depending on how you set each unit will go off when a door or a window is opened. Read Instructions to activate the batteries. NEW Please refer to photos to access Items Condition Shipping Policy ? If you are International Buyer - contact us before buying Payment Policy ? Item will be shipped immediately on the same or next business day of receiving full payment Return Policy ? Items Condition is clearly stated in the description ? Actual Images of item are shown ? Returns ACCEPTED FOR 7 DAYS, BUT THE BUYER IS RESPONSIBLE FOR RETURN SHIPPING AND 15% RESTOCKING FEE If you have any problems or questions - contact us right away and we will do our best to resolve the problem. Massages are answered from 9:00 AM to 5:00 PM EST Monday through Saturdays Good Luck and Happy Buying basement tools