Instruct: Classify a given Amazon review as either positive or negative.
Query: Bad monitor

I owned this monitor for about 20 months. When disconnected form the power cord, the receiver shows almost no charge and beeps to be recharged. Basically, the batteries fail. The receivers only work when connected to the outlet. I gave 1 star because it worked for at least a year, and the second star because I like the 10 channel selection. Other than that, I do not recommend buying this item.