Macally FreeCam2 Securityman Wi-Fi Interference Free Wireless Indoor/Outdoor Bullet Color x2 Kit with Night Vision and Audio Perfect for monitoring around your home or business Wireless video direct to your TV or recorder 900MHz with no interference from crowded 2.4GHz/5.8GHz devices Video transmission goes up to 330ft clear line of sight or 100ft indoor Night vision up to 23ft