Features: Door/Window Security Alarm Kit: Featuring low power consumption and high-quality processing, this alarm kit offers an easy way to protect your home and family. Each alarm can be paired with up to 8 remotes, and each remote can also be paired with multiple alarms, allowing you to control multiple alarms with just one remote. Real-Time State Protection: The alarm immediately triggers when a thief attempts to push open a door or window, with a response time of just 200ms. Easy Installation: The double-sided stickers on the back of the alarm kit make it easy to securely attach it to any smooth surface. Convenient Remote Control: The kit includes a remote control that allows you to easily operate the alarm within a range of 50m.  Specifications: Material: ABS+ Metal Color: White(Receiver), Black(Remoter) Batteries: 2pcs AAA Batteries (Receiver )(Not Included) 1pcs 12V 27A Battery (Remoter)(Included) Frequency: 433mhz Gap Distance Of Installing (The Distance Between The Receiver And The Magnet): 1cm Remote Control Distance: 20-50m Alarm Volume: 108db (Test Distance Is 30cm) Operating Environment Temperatures: -10°C-+60°C Operating Environment Humidity: R/H