eufy Door Cameras: Doorbells and Video Locks Compared

Best for: Homes with existing doorbell wiring

Pros

• Dual camera with 2K HDR
• Delivery Guard package alerts
• Chime included
• 3-second pre-roll

Cons

• Wired only, no battery
• HomeBase not supported

Best for: Simple first doorbell camera

Pros

• 2K with 4:3 view
• Battery or hardwired
• 24/7 recording when wired
• Quick replies and voice messages

Cons

• SD card not included
• Single camera

eufy Security

eufy Security Video Doorbell E340, Dual Cameras, 2K FHD

8.2/10Our score, based on listed specifications and buyer feedback

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Price and specifications are read from the Amazon product page and can change.

eufy Security Video Doorbell E340

Best for: Porches with frequent package deliveries

Pros

• Dual cameras for packages
• 8GB built-in storage, no fee
• Battery or wired power
• Color night vision

Cons

• 8GB fills faster than SD
• Wiring needs 16-24V source

Best for: Privacy-minded buyers wanting palm unlock

Pros

• Palm vein unlock in 0.6 seconds
• Very wide 180 degree diagonal view
• AAA backup batteries
• Matter and Apple Home support

Cons

• Up to 4 months per charge
• Storage method not specified

Best for: Hands-free families wanting face unlock

Pros

• Facial recognition unlocking
• Built-in doorbell and 2K camera
• 32GB local storage, no fee
• 60 GHz radar detection

Cons

• Not for mortise locks
• Not for round faceplates

Best for: Fingerprint entry with a door camera

Pros

• 2K camera with f/1.6 lens
• Fingerprint, keypad, app, keys
• 10,000mAh rechargeable battery
• About 15 minute install

Cons

• Storage method not specified
• No doorbell button mentioned

The eufy Security Video Smart Lock E330 is a eufy smart lock with camera. It replaces the deadbolt on your front door, and the outside part holds a 2K HD camera with an f/1.6 lens. A lower f-number lets in more light, which is why the listing says it gives a clearer view after dark. You can unlock it with a fingerprint in seconds, the keypad, the eufy Security app, Alexa or Google voice assistant, or one of the two physical keys in the box.

It runs on a large 10,000mAh rechargeable battery. The listing says installation takes about 15 minutes with no drilling on most standard US deadbolts, and it carries BHMA Grade 3 certification, a lock durability standard, plus IP65 weather resistance. You get real-time notifications, and it can pair with eufy Chime, Chime 2, HomeBase 3 and compatible eufy cameras and doorbells, sold separately. The listing notes that thumbnail previews in notifications are briefly stored in the cloud, but it does not specify where video clips are saved.

The E330 suits someone who wants keyless entry for the whole family and a camera at the door in one purchase. If you want built-in storage with no fee spelled out, the E40 is clearer on that point.

The eufy Security Video Smart Lock E40, also called FamiLock E40, unlocks by recognizing your face, so you do not even need a free hand. It is an all-in-one device: smart lock, doorbell and 2K camera together, with a 135-degree head-to-toe view that shows full bodies and deliveries on the step.

Power comes from a 15,000mAh rechargeable battery that the listing rates for up to 6 months, plus an 800mAh backup that switches on when the main battery runs low. It stores video on 32GB of built-in storage with no monthly subscription. A 60 GHz radar sensor detects human motion while filtering out pets, small objects and wind. It supports Matter, a smart home standard that lets it work with Apple Home, Google Home, Alexa and SmartThings. Installation needs no drilling on most doors, and it fits most standard US and Canadian single-cylinder deadbolts, but not round or non-standard faceplates or mortise locks. It is rated IP65 and works from minus 22 to 158 degrees Fahrenheit.

This is the pick for a busy family that wants a doorbell, camera and lock in one, with the no-fee storage clearly stated. For a round-up of eufy’s standalone cameras, see our eufy front door camera guide.

The eufy Security Video Smart Lock FamiLock S3 unlocks by scanning the vein pattern inside your palm, which the listing says takes 0.6 seconds and is hard to forge. The palm data is stored locally on the lock rather than online.

Its 2K HD camera has an f/1.8 lens with HDR, which balances bright and dark areas, and the widest view here: 150 degrees vertical, 150 degrees horizontal and 180 degrees diagonal. A 15,000mAh battery gives up to 4 months of use, and four AAA backup batteries add about another month if the main battery runs out. PIR and radar sensors work together to cut false alarms. Like the E40, it supports Matter and works with Apple Home, Google Home, Alexa and SmartThings. The listing does not specify how video is stored or whether it includes a doorbell button.

Choose the S3 if privacy and a very wide view matter most. If you want longer time between charges, the E40 lists up to 6 months.

The eufy Security Video Doorbell E340 is a dual-camera doorbell. The front camera shows visitors head to toe, and a second camera points down at your doorstep so you can see packages left there. Video is 2K.

It saves clips on 8GB of built-in eMMC storage with no subscription. You can run it on its quick-release rechargeable battery, swapped in seconds, or wire it to a 16 to 24 volt doorbell power source so the battery tops up continuously. Color night vision uses a dual-light system and reaches about 16 feet. It works with your existing mechanical chime, or with eufy HomeBase 2 and 3, the Minibase Chime, and Alexa and Google devices.

This is the best eufy video doorbell here for homes with lots of deliveries and no doorbell wiring. If you would rather lean on a memory card, the C31 uses one.

The eufy Security Video Doorbell C31 is the simplest doorbell in the group: one camera, 2K resolution and a 4:3 view, which is taller than a widescreen shape and helps show people from head to toe. When someone rings, a video call pops up on your phone, and you can set quick replies or let visitors leave voice messages.

It runs on a 6,500mAh quick-release battery or hardwires to your existing doorbell wiring. When wired, it adds 24/7 continuous recording and a 5-second pre-roll, meaning clips include the moments before motion was detected. The battery must stay inserted even when wired, the listing notes your existing chime needs to be bypassed, and storage uses an SD card that is not included. It pairs with HomeBase S380, MiniBase Chime, Alexa and Google devices. Our smart doorbell camera guide explains wiring terms if this is your first install.

The eufy Security Video Doorbell S330 is wired only and comes with a chime. It needs 16 to 24 volt, 30VA doorbell wiring, and the listing says HomeBase is not supported. Dual cameras record 2K video with HDR.

Delivery Guard spots packages, sends arrival and pick-up reminders, and alerts you to tampering. A 3-second pre-roll shows what happened just before motion, and it works with Alexa and Google Assistant. There is no monthly fee, and it is rated IP65, though a spec field oddly lists indoor use. Pick it if you already have doorbell wires and never want to charge a battery.