Easy installationn and operation, wifi version suitable for places without electricity but network. Features: Powered by solar, economical and environmentally friendly. Support adaptive code rate, voice call and remote wake. Rich picture details, real color eduction, effective noise control. High-quality metal material, strong and tough. Suitable for occasions of home, office, store, factory, etc. Specifications: Main Chipset: Hi3518EV300 Sensor: HD Mega COMS sensor 1/2.7 Lens: Wide Angle Len Video Stream: 1920*1080/15fps CMOS: Auto White-Balance, Auto Gain Control, Auto Backlight Compensation,DWDR System: Lite OS Standby: About six months(10 times/Day,15S/time) DN Switch: Double-Filter Auto Switch IR Distance: 850nm Infrared Ray,Effective 5M Match Mode: One-key wifi pair + Voice wave pair PIR human Detection: PIR Detection wake Audio Standard: AAC and G.726 Audio I/O : -38dB micphone/ built-in Speaker Record Management Mode: Manual/Alarm Recording WiFi: 2.4GHz Internet Protocol: