THIS IS A GENUINE "SAFE BABY" MONITOR. With The Home Sentry you can see and hear your baby without the frustration of noisy static, a drifting picture, an unreliable audio signal, or the risk of your signal drifting into neighbors' homes. It is a baby monitor that works! And, it will work with multiple cameras which automatically switch from room to room with the switching time set through the on- screen menu. The Home Sentry is a lightweight, affordable digital system that includes the following: two wireless cameras and one wireless 2.4-inch TFT LCD color monitor. This is an ideal portable system for baby, elder or patient care, as well security monitoring. Key Benefits include: --over 250 frequency-hopping sequences to minimize interference and protect privacy -- Portable cameras and monitor (w/ rechargeable batteries) --Infrared night vision technology--Digital zoom with selectable region--Adjustable volume level-- Auto camera exposure-- Video timeout to save energy--Signal strength indicator--Dynamic audio-signal strength indicator--Two transmission Modes: Audio & Video or Audio Only-- Sleep mode with Voice Activation (VOX)--Up to 5 alarm settings)--Both camera and monitor work with 3 different power sources; A/C adapter, Computer USB port or 3.7 V Li-ion battery (adapters & batteries included with the system)-Camera can be wall-mounted or set on tabletop--8 Infra-red LEDs for night-vision--Noise-filtering microphone--Manual swivel camera up/down and left/right-- MONITOR: Hand-held, belt-clip or tabletop options-- On-Screen Menu Display--Digital Clock w/ up to 5 alarm settings (e.g. for feeding/medicine reminder) --Built in speaker. TECHNICAL SPECIFICATIONS: Supply Voltage: 5 V DC adapter, computer-- USB port or 3.7 V Li-ion battery Transmission-- Frequency: 2.4 GHz (ISM band)-- Video Encoding/Decoding: MPEG4 Audio Encoding/Decoding;Battery Usage:3 hrs (camera) 3 hrs (monitor) continuous use- 4-6 hrs (with power save on) Typical indoor range-up to 200 feet