With my new coop/run up and running, I'd really like to have a baby monitor for peace of mind in case anything tries to break in at night. I've tried the cheapo Safetey 1st monitor and it did not work. I'll need something at least 900 mhz, and not ruling out a monitor with camera if the price range is right. I'm not running extension cords that far though, so I need batteries to last through the night and rechargeable batteries would be good. Anyone have ideas for me??