We are the manufacturer in Shenzhen,China. the camera is high quantity but low cost:
Technical Details
2.4G Color Wireless Camera with Receiver
Monitor up to 4 different cameras
Portable, Flexible and Easy to Install
Product Description
2.4G wireless color camera and receiver (with remote control) that can provide a variety of solutions for you. You can monitor your sleeping baby, or monitor kids at play, or keep an eye on your warehouse or store, - the applications are unlimited.

Product:
2.4GHz Wireless security camera & recording system, Range up to 400 ft, color
Observe
Listen
Record
USE Every Where
Nurseries
Homes
Office Buildings
Hotels-Motels
Schools
Warehouse
Parking Lots
This Version is Night Vision, can link to your AV or link to the PC through USB, record to your PC's Hard drive via USB connection. Designed for your home safety