IMOU Smart Alarm Security Kit, includes: 1x ZG2 Smart Gateway with Built-in Alarm Siren, 2x ZD1 Door & Window Sensors, 1x IMOU ZP1 Motion Sensor & 1x ZE1 Wireless Switch & Emergency ButtonIMOU ZG2 Smart Gateway with Built-in Alarm Siren, Plug-In, Control Centre of the Security Alarm System, Wi-Fi Connection, Supports up to 32 IMOU ZigBee Accessories, One Touch Button to Set Home/Away/Arm/Disarm Mode, Smart Scene Linkage, Remote Control & Alert Notifications via IMOU Life App (iOS, Android), Flexible Placement: Desktop or Wall Mounted (Includes Wall Bracket), Subscription-FreeIMOU ZD1 Door & Window Sensor, 100% Wire-Free, Maximum Detection Distance 25mm, Tamper-Proof Design, Smart Scene Linkage, Remote Control & Alert Notifications via IMOU Life App (iOS, Android), Flexible Placement using 3M Sticky Pads, 200m Wire-Free Range, Low Battery Reminder, 1 Year Battery Life (CR2032 Battery Included), Subscription-Free, ZigBee Connection with Gateway Required (Gateway Not Included)IMOU ZP1 Motion Sensor, 100% Wire-Free, IR Sensor, Temperature Compensation for Reduced False Alarms, 8m Detection Range, 90° Sensing Angle, Smart Scene Linkage, Remote Control & Alert Notifications via IMOU Life App (iOS, Android), Flexible Placement using 3M Sticky Pad & Magnetic Suction Design with 360° Rotational Adjustment, 200m Wire-Free Range, Low Battery Reminder, 1 Year Battery Life (CR123A Battery Included), Subscription-Free, ZigBee Connection with Gateway Required (Gateway Not Included)IMOU ZE1 Wireless Switch & Emergency Button, One-Click Alarm, Customisable Button Action, Smart Scene Linkage, Remote Control & Alert Notifications via IMOU Life App (iOS, Android), Flexible Placement using 3M Sticky Pad, 200m Wire-Free Range, Low Battery Reminder, 1 Year Battery Life (CR2032 Battery Included), Subscription-Free, ZigBee Connection with Gateway Required (Gateway Not Included).