2.4GHz wireless transmission * Up to 200 meters outdoor long-distance transmission without obstacle, indoor transmission 30 meters (varies by environment) * 3.5 inch display screen, camera with shaking head function , 120 degrees up and down, 355 degrees left and right * Two-way intercom, power alarm setting (2 hours / 4 hours / 6 hours) * Invisible light night vision function * Temperature display / built-in probe * Temperature alarm temperature monitoring (temperature difference is plus or minus 2 degrees) * One to four function (one receiver can be connected to four transmitting cameras) * Image magnification (magnification 2x) * Multi-angle monitoring (can be adjusted horizontally/vertically) * Multi-transmitter image preview function * Power saving mode ECO/VOX smart wake-up: extend standby time (voice activation) * Cui Mian song playback * Adjustable volume and brightness * No signal alarm * Low battery alarm * 950mAh large capacity lithium battery, standby time up to 12 hours in ECO mode, up to 6 hours in normal mode * 2.4GHz wireless digital audio and video transmission * CCD pixels: 640*480 * Outdoor transmission distance: up to 300m (without block) 3.2 inch TFT LCD screen Voice activation response Ambient temperature display Feed music Long battery life night vision Frequency: 2.4GHz digital Modulation mode: GFSK Operating temperature: -10c to +45c Range: 200m in open field Multiple languages: English, French, Spanish, Portuguese, Italian, German, Turkish, Russian Monitor Resolution: 320*240@20fps Battery: 750mAh li-polymer Camera Sensor: 0.3 megapixel CMOS Minimum illumination: 0 LUX (IR ON) Night vision distance: 15 feet (5 m) Lightning sensor rage temperature sensor GENERAL Transmit frequency 2400MHZ-2480MHZ Transmit power 17dBm Operating frequency 2410MHz Clear effective range 250m Modulation mode FHSS Operating temperature 0-60 Storage temperature 25 Operating humidity 20% to 80 %RH CAMERA Imaging Sensor Type 1/4CMOS Horizontal Resolution 360Line Viewing Angle 60 Minimum Illumination 1.5Lux Mark Width 4MHZ Night Vision Range 3-5m Battery Life 2 Hours VOX>10M Sound Control Sensitivity > 60 dBA Current consumption 2200mA+15mA Power supply DC 5V Dimensions (LXPXH) Frame 25 Weight Receiver Screen type LCD 3.5" TFT-LCD Effective pixels 640X480 Receive sensitivity -85dBm Battery life 8 hours Color configuration RGB Consumption current 200mA+15mA Supply DC 5V Dimensions (LXPXH) Weight