The Digital Wireless family Monitor system from First Alert has a wireless transmission range up tp 750 feet. Unlike analog monitors you will not get any interference from other wireless devices; i.e. Wi-Fi routers, cordless phones, etc. The digital signal will provide crystal clear video and audio directly to your color receiver. No more audio feedback and no need to purchase a separate audio kit. This Wireless Monitor System Features:Night Vision up to 10 Feet.Passive infrared (heat + motion) motion detection.Built-in Microphone with an audio range of 10 feet. Crystal clear color display.Secure digital signal.Dimensions (Camera & Stand) = 4.0"H x 3.4"W x 3.9"D. Dimensions (Monitor) = 2.8"H x 2.0"W x 4.7"D.12 months limited warranty. Included in this kit: First Alert Digital Wireless Camera and Monitor D545B, Power Supply, AV Cable and Manual. CAUTION! Some federal, state, and local laws prohibit certain surveillance activities and/or the use or distribution of the information obtained from such activities. Prior to using this system, you should become familiar with the pertinent laws to ensure compliance with those applicable to surveillance activities.