August 14, 2022

Comparing the Arlo Pro 4 vs. Pro 3 is a bit like trying to tell two identical twins apart. They’re literally the same size and weight, and match one another in resolution, field of view, night vision, and virtually every other home security category. However, there’s one key difference between them, which will make it simple for you to decide which is the best Arlo camera for you. 

Arlo Pro 4 vs. Pro 3 Specs

We won’t hold you in suspense: you won’t find many differences between the two models in the Arlo Pro spec table below. The quality of the footage, day or night, won’t change. Both come with a wall mount, magnetic charging cable and replaceable battery pack, and have the weather resistance to be mounted either outdoors or indoors. They both work with most smart homes, but also require a paid Arlo Smart subscription to get cloud storage and advanced AI detection. You can see all the similarities below, and we bolded any category with differences.

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Arlo Pro 4 Arlo Pro 3
Dimensions 316g; 89mm x 52mm x 78.4mm 316g; 89mm x 52mm x 78.4mm
Smart hub required No; can connect camera directly to router Yes
Max Resolution 2560×1440 2560×1440
Video Modes 2K
1080p
720p
2K (only with Pro 3 Smarthub or Ultra Smarthub)
1080p
720p
Lens FOV 160 degrees diagonal 160 degrees diagonal
Motion Detection FOV 130 degrees diagonal 130 degrees diagonal
Night Vision Color; 850nm infrared detection Color; 850nm infrared detection
Spotlight 6500K, 42Lux @1M 6500K, 42Lux @1M
Digital Zoom 12X 12X
Sound Detection Yes Yes
2-way Audio Yes; uses single mic with noise and echo cancellation Yes; uses single mic with noise and echo cancellation
Built-in Siren Yes Yes
Battery 3-6 months 3–6 months
Operating Conditions -20–45 degrees Celsius (-4–113 degrees Fahrenheit)
Water resistant
-20–45 degrees Celsius (-4–113 degrees Fahrenheit)
Water resistant
Smart Home Compatibility Amazon Alexa, Google Assistant, Apple HomeKit, IFTTT Amazon Alexa, Google Assistant, Apple HomeKit, IFTTT
AI Features with Subscription People, package, animal or vehicle detection People, package, animal or vehicle detection
Upload Data Usage 2-4Mbps 2-4Mbps
Storage Cloud storage requires subscription
Local storage requires smart hub and USB 2.0-compatible drive
Cloud storage requires subscription
Local storage: connect USB 2.0-compatible drive to smart hub

Arlo Pro 4 vs. Pro 3 Smart hubs and storage

Arlo Pro 3 Rain

(Image credit: Source: Arlo)

You need an Arlo base station or smart hub in order to use the Arlo Pro 3, whereas the Arlo Pro 4 is compatible with them but can also sync up to your Wi-Fi network directly. You can buy an individual Pro 3 for cheaper than a Pro 4, but it’s just a paperweight unless you already own a compatible hub: a VMB4540 or VMB5000.

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