Features:  WIFI Tuya APP Control:  Tuya APP allows you to control the whole security system anywhere with your IOS/Android Smartphone or tablet and receives warning notifications of the exact area when the alarm was triggered.  MULTI-PURPOSE:  Built-in magnetic contact sensor and PIR motion sensor detect any forceful break-in to activate the alarm to deter potential intruders (0-120db), chime prompt, SOS emergency for home/business/office/child/disabled person safety protection.  Compatible with Alexa & Google Home:  Connect KERUI Alarm to select Alexa-enabled devices to easily set your Alarm in home, away, and disarm modes and check the status of your security system with hands-free voice control. And when paired with Alexa Guard, you can set Guard to Away Mode detects to get Smart Alerts sent to your phone if your device the sound of smoke alarms, carbon monoxide alarms, or glass breaking when you're away.  Protection for your whole home:  To enhance your connected, whole-home security system, add smart accessories (sold separately) to your KERUI Alarm, such as sensors that detect fire, carbon monoxide, flood, and freeze and panic buttons to quickly request help.  COST-EFFECTIVE PIR MAIN PANEL:  WP71 Panel allows to work as standalone alarming by easy operation such as one-button operation to arm/disarm/adjust volume/change ringtones. You can install the PIR main panel (or PIR motion sensor detector) in the area where is without opening door/ window.  History records:  Check the operation records such as arming, disarming and alarming.  APP Setting:  Arm delay: arm the device after preset time;  Timer: arm the device at preset date/time;  Infrared detection switch: device motion sensor detection function;  Alarm volume: 4 levels adjustable;  Alarm light switch: device flashing light;  Alarm time: 0-255 seconds adjustable;  Alarm tone type: 5 types adjustable;  Arm or disarm message push switch: app push up for notification;    Do it all yourself:  Easily setup your KERUI Alarm system in minutes. no tools are required. Simply plug-in the KERUI Alarm base station, activate your system via the Tuya app, and place the contact sensors and motion detectors in your desired location. Now you're ready to protect     Specifications:  Power Supply: External USB5V DC power supply / 3 AAA bateries;  Standby Current: <30mA;  Working Current: <100mA;  Shutdown Current: <100uA;  Detection Range: around 8 meters;  Alarm Volume: 120dB;  Detection Angle: 110 degrees;    Package included:  1 x set of Security Alarm System