A:Answer Hello there Joe, and thank you for reaching out with this great question. The Defender Phoenix wireless security system is great for both home and business use. The range from monitor to camera is approximately 100 feet with a clear line of sight. The more walls and doors that are in between the wall and camera can affect and possibly interfere with the wireless signal. If you have any additional questions we will be glad to assist you. Please reach out to us via our website, phone or chat for more information on the Phoenix security system, we would love to assist!. -Lauren A. | Defender Customer Experience Expert | Defender Customer Support: 1-866-946-7828 | www.Defender-usa.com