2.4GHz Wireless Technology ECO/VOX Smart Wake-up: Extends Standby Time Temperature Monitoring (with ±2°C accuracy); High/Low Temperature Alarm Two-way Intercom without Delay Multiple Built-in Fixed Lullabies Powerful and Stable Infrared Night Vision Multi-angle Monitoring (Adjustable in Horizontal/Vertical Directions) Adjustable Brightness/Volume Plug-and-Play: DC Interface; No Complicated WIFI Connection or Additional APP Download Required, Simple Installation 2x Magnification Feeding Alarm Setting (1/2/3/4/6 Hours) 300m Barrier-free Long-distance Transmission, Indoor Transmission 30m (Varies Depending on Environment) Parental Unit Can Connect to 4 Baby Unit Cameras Simultaneously Standby Time Up to 12 Hours in ECO Mode, and Up to 8 Hours in Normal Mode Frequency: 2400-2483.5 MHz Image Sensor: 1/6 CMOS CMOS Pixel: 640*480 TFT LCD Screen: 5" Effective Pixel: 480x272 Demodulation Mode: GFS Frame Rate: Up to 25 fps Power Adapter: Input: 100-240 V, 50/60Hz; Output: 5 V, 600 mA Built-in Lithium-ion Battery: 3000mAh Standby Time: Up to 15H in ECO Mode Transmission Power: 18+/-1dBm Consumption Current: 100 mA Display Color: Full Color Operating Range: Up to 300M (Outdoor Open Space with No Obstacles) Operating Temperature: 0 ~ 40°C Humidity: 5-90% RH Language: Multiple Languages Available in Menu, Including Russian Package Contents: Transmitter Host X1 Receiver Host X1 Charging Plug (for Transmitter) X1 Charging Plug (for Receiver) X1 Instruction Manual X1 Explosion-proof Screws (for Wall Mounting) X1