I like this concept. The range is good - better than many other solutions. The device is a bit bulky. The belt clip is made of plastic and doesn't hook well; The handset fell off the belt several times. The biggest problem is that all the buttons on the receiver are exposed and easy to accidentally press. This happened to me: somehow the mute button was pressed and I couldn't hear the alarm. It is better to make the button countersunk to prevent accidental pressing.
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