WIRELESS MOTION SENSOR ALARM - Motion detectors are essential in a home security system.A complete stand-alone motion sensor based alarm system for shed,kitchen,room,boat,garage,etc.It provides an added level of security and safety to your property and loved ones.MORE SECURE DESIGN - The PIR motion Sensor features fuzzy logic processing technology and intelligent analysis algorithms to optimize its ability to correctly interpret signal.Communication range of up to 328ft (Sound range in open place) and detection range of the infrared sensor of approximately 16-26ft, When the burglar try to come here, it will detect him and activate 125dB siren.EASY INSTALLATION - Door alarms for home is simple installation and easy to use.Indoor motion sensor alarm systems can be mount to everywhere in your home.Used to prevent children from sneaking out, dogs running out without allow,preventing pets from going to somewhere (such as preventing dogs and cats from entering the bedroom, kitchen),etc.Remote controlled operation, activate and deactivate the system even from the outside - solid user manual provided.Add more movement detectors or remote con.2 ALERT OPTIONS AND 2 POWER SUPPLY MODES- There are two types of alert settingsAlarm ring/Door ring.Two power supply mode: The motion sensors can be supplied power by 3*AAA batteries(included) or micro USB(Not included, only for supplying power, not for charging).EXCELLENT QUALITY & 100% SATISFACTION - Package Contents: 1 x Motion Sensor Alarm,1 x Remote Control,3 x AAA batteries,1 x Double Side Tape,2 x screw,1 x Instruction manual. We stand our products 100% with a 30-day Return. If you have any problems, please feel free to email us , Questions or requests? We respond fast and always in your interest.