Meet the Project Nursery baby monitoring system: a versatile solution that allows parents to keep an eye on their baby conveniently. It has a wireless range of 800 feet. You not only get a main monitor with a 5″ display but also a mini monitor with a 1.5″ display that you can wear and carry around.
The system features 2-way audio, a pan/tilt/zoom camera, room temperature sensor, and infrared vision. Users can pair up to 4 cameras. The mini unit has up to 8 hours of battery life. Costs under $300 at this time.