“If put parent unit garage , baby unit house can still hear through metal garage door”
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Hi - The operating range of the VTech DM221-2 is up to 1,000 feet (300 meters) outdoors or 160 feet (50 meters) indoors. Please note that the actual operating range may vary depending on the environmental conditions, and other interferences such as walls, doors, and other obstructions. Thank you, -VTech Support
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