2.4GHz wireless transmission *Outdoor distance up to 200 meters *7 inch display screen, head-shaking camera, 120 degrees up and down, 355 degrees left and right *Two-way intercom * Function invisible light night vision * Temperature display / built-in probe * Temperature alarm * One to four function (one receiver can be connected to four transmitters) * Image zoom in and out * Digital image panning * Image preview function of multiple transmitters * Power saving mode (voice activated) * Play Cui Mian song * Adjustable volume and brightness * No signal alarm * Low battery alarm * Battery at 4000mAH large capacity lithium * 2.4GHz wireless digital audio and video transmission * CCD pixels: 640*480 * Outdoor transmission distance: up to 300m (without block) 5 inch TFT LCD Voice activation Answer function Display of the t Ambient temperature 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: 1280*720@20fps Battery: 4000mAh li-polymer Camera Sensor: 0.3 megapixel CMOS Minimum illumination: 0 LUX (IR ON) Night vision distance: 15 feet (5 m) Lighting sensor temperature sensor GENERAL Transmit frequency 2400MHZ-2480MHZ Transmit power 17dBm Operating frequency 2410 MHz Clear effective range 250m Modulation mode FHSS Operating temperature 0-60 Storage temperature 25 Operating humidity operating 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 5" TFT-LCD Effective pixels 1280X720 Reception sensitivity -85dBm Battery life 8 hours Color configuration RGB Current consumption 200mA+15mA Power supply DC 5V Dimensions (LXPXH) Weight