Indoor Temperature Monitoring: monitor with temperature display, switch between Celsius and Fahrenheit, has a good monitoring of the baby's daily room temperature. Good Security: Wireless point to point transmission, digital signal transmission, stable without interference, digital signal encrypted transmission, good security. Two Way Intercom: Our baby surveillance has built in microphone and speaker, you can talk to your baby from a distance without running back. Polyphonic Music: There is built in 3 minute chord music in this baby camera, can soothe the baby to sleep, the volume can be adjusted. Infrared Sensor: The camera has a 2.4 inch LCD screen, infrared distance 5M, IR CUT automatic switching, realize day and night monitoring.