The correct answer is: A. 300 m.
DECT (Digital Enhanced Cordless Telecommunications) is a family of digital radio standards for cordless telephony. It was developed in Europe in the 1980s and 1990s, and is now used in many countries around the world. DECT is a very efficient and reliable technology, and is often used in business and public safety applications.
The range of a DECT cell is typically around 300 meters. This means that a DECT phone can be used within a radius of 300 meters from the base station. This range can be extended by using repeaters, which are devices that amplify the signal.
The range of a DECT cell is determined by a number of factors, including the power of the base station, the type of antenna used, and the environment in which the phone is being used. In general, DECT phones will have a better range outdoors than indoors.
DECT is a very versatile technology, and can be used for a variety of applications. It is often used for cordless phones, but can also be used for other applications such as baby monitors, security systems, and public address systems.
Here is a brief explanation of each option:
- Option A: 300 m. This is the correct answer. The range of a DECT cell is typically around 300 meters.
- Option B: 2 km. This is too long. The range of a DECT cell is typically around 300 meters.
- Option C: 10 km. This is too long. The range of a DECT cell is typically around 300 meters.
- Option D: 70 km. This is too long. The range of a DECT cell is typically around 300 meters.