Tags Talk
Tag: talk
Effective communication security guard training.
Basic security guard training Unit 2 Lesson (E)
Communication is a channel in which People deliver their thoughts, feelings, and emotion to others. Not only...
radio communication, basic security guard training
Security guard basic training Unit 2 Lesson (C)
Radio (walkie-talkie) is a hand-held, convenient two-way radio transceiver, multiple walkie-talkies can utilize a single radio channel,...
