It arrived very quickly and efficiently and is easy to get to work. Has 45 tones to choose from. I just picked the loudest one to wake me up when needed. His bedroom is at one end of the house and mine is at the other end of the 4 bedroom, 3 bath ranch and they are easy to get to. Has a flashing light and a sound and I use both. The battery, C2032A, I believe was already in his button, which he can wear around his neck or lay on a table. I had to buy other AAA.
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