Smart human motion sensor is compact and lightweight, and is very suitable for installing in different rooms or corners of your house to provide home security. With high sensitivity and strong anti-interference ability, it will push alarm notifications to the smart APP when it detects human movement within the detection range. Features: Smart Human Motion Sensor: Adopts PIR sensor, with high sensitivity and strong anti-interference ability. Wifi or ZigBee type for option. A ZigBee gateway (not included) is required for using the ZigBee type. APP Control: Easy to control the sensor via APP, when it detects human movement within the detection range, it will push alarm notifications to your smartphone. Sensitive Motion Induction: 5m (16.4ft) detecting distance, 120-degree detecting angle, with real-time day and night monitoring, better protects your house. Easy Installation: Comes with a double-sided adhesive tape for easy installation, no wire required. Compact and lightweight, concise appearance, fits well with your modern house. Battery Operated: Wifi type needs 3 AAA batteries (not included); ZigBee type is built in with a 3V CR2450 button cell. With low power consumption and long standby time. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Type: Wifi/ ZigBee (Optional) Color: White Material: ABS Wifi: 802.11 b/ g/ n, 2.4GHz ZigBee: ZigBee 3.0 Detecting Angle: 120-degree Detecting Distance: 5m APP Control: Compatible with 'Smart Life' Power Supply: Wifi: 3 * 1.5V AAA Battery (NOT included) ZigBee: 1 * 3V CR2450 (Built-in) Item Size: Wifi: 62 * 62 * 30mm / 2.44 * 2.44 * 1.18in ZigBee: 33 * 27mm / 1.30 * 1.06in (Dia. * H) Package Size: Wifi: 6.8 * 6.8 * 3.3cm / 2.68 * 2.68 * 1.30in ZigBee: 6 * 6 * 3.3cm / 2.36 * 2.36 * 1.30in Package Weight: Wifi: 64g / 2.25oz ZigBee: 27g / 0.93oz Package List: 1 * Human Motion Sensor 2 * Double-sided Adhesive Tape 1 * User Manual (English)