Essential Digital Video Baby Monitor The Essential Digital Video Baby Monitor offers essential performance to see your child at all times, keeping in touch with him inside and outside the home. Its large 2.4-inch display and the camera swiveling infrared (works in the dark) they offer excellent vision and perfect aiming. The dual function of small light antibuio, fixed or variable intensity, allows you to keep the company small during bedtime or in the stage that precedes it. By setting the voice-activated, the parent unit will be activated only in the presence of sounds detected by the child. The digital technology used allows for interference-free reception * and a high standard of privacy. Both units (parent and baby) can run on battery or AC adapter. TECHNICAL INFORMATION Including two network adapters and a rechargeable lithium battery for the parent unit. Band transmission frequency: 2400-2454 MHz. Operating range: approx 150m (under optimal conditions in open field with no obstacles). * High immunity to interference caused by similar devices.