Letter Re: Inexpensive Perimeter Security for Your House in the Suburbs
HJL, After reading this in the blog from “KL”, I too went to Harbor Freight and purchased several units. To offer some further information, each box contains one sender and one receiver. Each box has a small oval sticker on the front identifying the channel. All of my units utilize the same tone. So even if I purchase units with different channels, they all sound the same when they go off. I wish the manufacture offered different choices of alerts per unit. The receiver can utilize an optional 6 volt, 200 mA power adapter, but the manufacture doesn’t offer it …