The communication company installed an energy base station on the upper floor

Base stations are often referred to as towers or cell sites, but they are literally the equipment that houses the radio transmitters and receivers that carry the signal to wireless carriers. Base stations transmit signals from one cell site to the next.

The tower itself doesn't emit any RF energy; in fact the area directly surrounding a cellular base station is exposed to less RF energy than areas further out, as the antenna radiates in a fan or wedge shape outward from the source.

Base stations transmit signals from one cell site to the next. Antennas are typically placed high above the ground (on towers or other tall structures) to transmit and receive signals between cell sites. Any device that relies upon radio-waves to transmit and/or receive data, emits radiofrequency (RF) energy.

Some communications equipment systems include detectors and alarms that transmit to centralized control centers within the system itself. High-rise buildings often utilize a second dedicated facility alarm and can be included as part of a central alarm system connected to the local fire department.

Like other radio towers, such as those used in broadcast radio and television, the use and construction of a cellular base station is regulated by the FCC, and the RF energy levels it can produce fall well below levels considered to pose a threat to health. The antennas themselves must be kept inaccessible to the public, and at a safe range.

This includes base stations, cell sites, and mobile devices. Since the base station and the devices connected to utilize low power radio waves, they aren't considered to be dangerous, so long as the antenna portion of the station is kept at a safe distance from anyone nearby.