Please take into account that objects that block line-of-sight between the transmitter (camera) and the receiver (Parent Unit), may reduce the actual range. Such objects could be: any large metal object, like a refrigerator, a mirror, a filling cabinet, metallic doors or reinforced concrete between the baby and parent unit.
The signal strength may also be reduced by other solid structures, like walls, or by radio or electrical equipment, such as cordless or mobile phones, fluorescent lights, TV, computers or dimmer switches. In order to minimize the environmental influences it is recommended to keep the baby monitor (baby and parent units) at least 3 feet away from these types of products.