Guards using two-way radios can listen in real-time to possible problems or emergencies, and respond to them quickly and accurately. Two-way radios allow long-distance communication between security guards, helping employers fulfill their duty of care to employees.
When people are shouting or singing, it's nearly impossible for security guards to hear other people's voices on the phone. Two-way radios usually come with high-power speakers and are equipped with noise cancellation technology, which ensures clear and loud audio, so messages are not missed.