Features: 3.5" COLOR TFT SCREEN: Super clear picture shows real-time video and audio, 2.4GHz wireless technology prevent signal drop outs. View angle adjustable and easy to install. PAIR WITH 4 CAMERA: One monitor can pair with 4 camera, parents can select which camera to monitor or scan the camera one by one. 2 WAY TALKBACK & CLASSIC LULLABIES: You can hear your baby and let baby hear your voice with super clear sound. 4 soft music to soothe your baby at night and auto stop in 40 minutes. AUTO INFRARED NIGHT VISION: The Infrared Night Vision will automatically start in dim light, providing clear video even in dark room. TEMPERATURE MONITORING: Temperature monitoring helps you observe the baby room temperature and alert with beep when the temperature is over 30. Brightness adjustable & Energy saving function. Parameters System General: 1.Operating Frequency Range: 2400 MHz-2483.5 MHz 2.Transmitting Power: 17dBm Max 3.Monitor Sensitivity: -88dBm 4.Type of Modulation: GFSK 5.Transmission range: Outdoor 100m(Eye of Sight). Indoor use only. Wireless Camera: 1.Image Sensor Type: 1/3 Color CMOS Image Sensor 2.Effective Pixel: H:640,V:480 3.IR LED Type/Night Visoin: 8pcs IR LED-850nm/5m 4.Power Requirement: DC 5V ; Camera not built-in battery. 5.Other Special Feature: Built in Microphone/Speaker