The babyphone is a technological invention dating back at least eighty years. The basic features remain the same, but they have still seen a marked improvement. It should be noted that a babyphone is primarily used as an instrument forListening to the baby. Today, almost all babyphones are connected and incorporate video camera features. 

A brief reminder of how a babyphone works 

It is based on a fairly basic principle of communication that involves thetransmitter and receiver. The transmitter is placed in the baby's room and the receiver is installed in the room where the parents are. Transmission occurs through radio waves and magnetic walls. To establish communication, both units of the babyphone must be able to adjust to the same wavelength. To answer this question, there are several frequency levels:

40 MHz: This frequency is the same as that used by radio waves.

1,900 MHz: This level of frequency is most used in mobile telephony.

2,400 MHz: The vast majority of modern, Wi-Fi babyphones use this frequency. 

Wi-Fi connection: valid for connected babyphones.

The technologies that today's babyphones are taking on

• The walkie-talkie functionIt is possible to talk to your child remotely via the receiver.  
• The camera function: a high-resolution video recorder films everything that's going on in the room. Many modern babyphone models are currently incorporating a night video camera.
• The wifi connectivityIt connects the device to your smartphone with a dedicated app.
• The thermometer and hygrometer These functions help you control the temperature and humidity level in the baby's room.
• An encryption system built into the device: it guarantees you against the risk of theft or loss of data.