2.4 GHz wireless technology ECO/VOX smart wake-up: extends standby time Temperature monitoring (temperature difference plus or minus 2 degrees); high temperature/low temperature alarm Two-way intercom without delay Multiple built-in fixed lullabies Powerful and stable infrared night vision function Multi-angle monitoring (adjustable horizontally/vertically) Adjustable brightness/volume Plug and play: DC interface; no complicated WIFI connection or downloading any other APP required, easy installation 2x magnification Feeding alarm setting (1/2 hour 3/4 hour/6 hours) 300 meters barrier-free long-distance transmission, 30 meters indoor transmission (varies depending on the environment) Parents can connect 4 baby cameras simultaneously Standby time can be 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 Pixels: 640*480 TFT LCD Display: 5" Effective Pixels: 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 15 hours in ECO mode Transmission Power: 18+/-1dBm Power Consumption: 100 mA Display Color: Full color; Working Range: Up to 300M (direct distance in open space without obstacles outdoors) Working Temperature: 0 ~ 40°C Humidity: 5-90% RH