Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Adequate System

I bought this intercom set to monitor our pregnant goats. "Monitor" function is good; range of use is great (over 300 ft from house to barn, through solid walls and metal roof). Battery only use lasts a very long time. Hate the "beep", I would rather just start hearing the goat's "BAHHH". Very little actual volume control--it's loud, louder and loudest and not very easy to figure out how to set. It will be a good intercom for just calling from barn to the house but a regular baby monitor would be better for my purposes if I could find one that is truly wireless like this.