... detection, special temperature compensation circuit design, wireless signal transmission. 3. Remote arm and disarm, automatically generates and saves recorded ... Special Features: Power Input:100~240VAC 50HZ/60HZ Backup Battery:3.7V rechargeable Lithium batteryPIR Detect:Wide-Angle:100° 8 * ... Frequency:433 / 868 MHZ(optional) Backup Battery Working Time:≤ 3 HoursCamera:1/6.5” OV CMOS Chip, 300,000 pixel ...