Overview: When leaving home, it will push a notification message to you when the door/window opens or closes, so you can discover the intruder in time. Furthermore, you could share the device with your family members and track the history of sensor activities. Specifications: Input voltage: Dc3v LR03 Quiescent current: ≤ 10uA Alarm current: ≤ 160mA Low voltage: ≤ 2.7V WiFi:802.11b/g/n Magnetic control distance: ≥ 15mm Working temperature: - 10-50c Working humidity: Maximum 95% RH Size information: Size: 70 * 20 * 16mm Color box size: 75 * 22 * 18mm Net weight: 65g Gross weight: 70g Package Content: 1 * Alarm Reminder