◆ Thank you for viewing! We will handle initial defects if any. ◆ Shipping to Hokkaido, Okinawa, and remote islands requires separate postage. Please comment in the comment section if applicable. ◆ Product Description ◎ Please choose the color from white or black! ◎ This is the product page for the color: Black. ◎ This product is a set of four. This is a security alarm that attaches to windows and other surfaces to deter intruders with a loud sound! Installation is as simple as applying double-sided tape! 【Security Sensor】 The sensitivity can be adjusted with the sensitivity sensor adjustment switch on the side. You can change the sensitivity to suit the environment! Effective as a countermeasure against malfunctions caused by natural sounds, vibrations, or truck noises! 【No Construction Required】 Installation is complete just by sticking it on doors and windows! No need to drill holes or perform any construction work! Can be used in homes, apartments, stores, offices, warehouses, garages, etc.! ※ It may not react if installed on non-vibrating parts such as metal frames. Uses 3 LR44 button batteries for approximately 1 year! 【Includes Intrusion Prohibited Stickers】 Includes intrusion prohibited stickers with 4 languages to support multiple nationalities! Please stick them in a visible place, such as near the alarm. 【No Construction! Ultra-thin and Lightweight】 Ultra-lightweight at 43g, easily sticks to doors and windows! The back has double-sided tape, so you can stick it on glass windows and use it immediately after activation! 【Deters with a Loud 125dB Sound】 Detects abnormalities such as vibrations and sounds a powerful sound for 30 seconds to deter intruders. 【Contents】 Main unit x 4, LR44 button batteries x 12, Intrusion prohibited stickers x 4 【Product Details】 ・Size: 71.9mm x 9.9mm ・Volume: 125dB ※ Equivalent to the sound of an airplane propeller engine ・Weight: 43g ・Material: ABS