eufyCam S4 + Video Doorbell E340
eufyCam S4:
- Revolutionary Triple-Lens Bullet-PTZ Camera: A single groundbreaking device that replaces and outperforms separate bullet and PTZ cameras. The upper 4K bullet lens delivers a 130° fixed wide view, while the lower 2K dual-lens PTZ offers 360° smart tracking and zoom.
- Bullet-to-PTZ Tracking and Auto-Framing: Once the bullet cam detects a subject, the PTZ camera instantly locks on, tracks, and zooms in to capture details up to 164 ft away. When more subjects enter the frame, it automatically zooms out to ensure they all stay visible.
- Powerful Solar-Charging with SolarPlus™: Stay charged year-round with a 5.5W ultra-large solar panel and SolarPlus™ 2.0. Just 1 hour of direct sunlight a day keeps the camera running, and the detachable design makes setup easy and flexible.
- Great on Its Own: eufyCam S4 can work independently—no HomeBase™ needed. It features on-device AI for smart human, vehicle, and pet detection. It comes with 32 GB built-in storage, expandable up to 256 GB via microSD (not included).
- Better with HomeBase™ S380: Unlock BionicMind™ AI to differentiate family from strangers. With 16 GB built-in storage, expandable up to 16 TB, rest easy knowing your videos are stored securely. If you already own a HomeBase™ S380, please make sure it’s updated to version V3.7.2.8 or later, and your eufy app is updated to the latest version to enable 24/7 recording and Snapshot features.
*HomeBase™ 2(Homebase™ S280) , Homebase™ mini, Homebase™ Professional and eufy NVR are not currently supported.
- Precise Detection, Powerful Deterrence: Radar and PIR sensors deliver precise motion alerts with fewer false alarms. When a threat is detected within your set zone or schedule, red and blue warning lights and a 105 dB siren activate to deter intruders.
Video Doorbell E340:
- Dual Cameras, Double Security: Two cameras work together to deliver advanced viewing. The front-facing camera focuses on people, while the downward-facing camera fills in the gaps with a view of the floor in front of your door.
- Color Night Vision for a Clear View : Introducing the industry's first dual-light system paired with an advanced light capturing and processing algorithm. Less blur than previous iterations of night vision and a clear nighttime viewing distance of up to 16ft (5m).
- See What Matters in 2K Full HD Clarity: 2K clarity reveals more details. Get clear and detailed visuals of your doorstep and anyone who drops by.
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Battery or Wired, Your Choice: Battery mode makes installation easy. Keep a spare quick-release battery for quick swaps and avoiding downtime due to charging. Wired mode is also powered by the battery, which is topped up by the wired power source for long-lasting performance. Note: Wired mode requires the battery to be installed and a power source power should be connected with 8 to 24V and >10VA.
eufyCam S4 + Video Doorbell E340$449.98
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Quick Intro
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*Push notifications with thumbnail previews require thumbnail preview images to be temporarily stored in the cloud.
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*With optimal sunlight, the solar panel can collect and store 1,000 to 2,500mAh per day. The camera uses 300 to 550mAh over a whole day of average use.
**Compared to eufy's 3W solar panel.
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*Push notifications with thumbnail previews require thumbnail preview images to be temporarily stored in the cloud.
See how it works▶
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Products Comparison
Wide Angle Lens: 130°
Telephoto Lens: 46°
(Detachable) SolarPlus 2.0
135°
135°
Specs
Video
Max Resolution
Bullet: 4K (3840×2160)
PTZ: 2K + 2K (2688×1520)
Sensor
1/2.8-inch Stacked CMOS
1/3-inch CMOS
Lens
Fixed - Wide angle Lens:
D130° H107° V57°
PTZ
Wide angle Lens:
D121° H102° V54°
Tele Lens
D46° H40° V23°
Zoom
8x Hybrid Zoom
Color Night Vision
Spotlights for Color Night Vision
IR Night Vision
4 IR LEDs (850nm)
Illuminates up to 32.8 feet (10m)
WDR
Yes(default open)
Encoding
H.264 / H.265
Frame Rate
Up to 15 fps
Audio
Two-Way Talk
Full Duplex 2 way Audio
Microphone
Dual Mic Array with noise reduction
Siren
High quality speaker with 105dB security siren @ 0.1m
Power Supply
Power
Quick-Swap 10000mAh Rechargeable Battery Pack
Dual Power Mode
Dynamic switching between plug-in (requires USB-C cable) and battery power modes
Solar Panel
Yes, Detachable (top integrated mount or seperate mount)
SolarPlus 2.0
Support External Solar
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Motion Detection
Type
【Bullet】 PIR Motion Detection up to 30 feet
【PTZ】 Radar-powered Motion detection up to 40 feet
Smart AI
- Human/Vehicle/Pet Alert
- Stranger Alert (requires HomeBase™ S380)
Rich Notifications
Full nitifications with text and thumbnail
AI Tracking
Smart Human Tracking
Yes
Bullet-to-PTZ Tracking
Yes
Auto-framing
Yes
Other Features
24/7 Smart Snapshot
Yes (requires HomeBase™ S380)
24/7 Continuous Recording
Yes (when connected to direct power)
Activity Zone
Two, hexagons
Privacy Zone
Yes
Cross-cam Tracking
Yes (requires HomeBase™ S380)
Smart Intergration
Apple HomeKit/Alexa/Google Assistant
In-App Security Report
Yes
Installation
Average Install Time
5 to 10 minutes
Operating Conditions
-4℉~131℉ / -20°C~55 °C
Weatherproof
IP65
Setup Requirements
Vertical or horizontal surface for mounting
General
Color
White and black
Product Dimensions
(L×W×H)
Camera
92x164.5x165mm
Camera (45° Tilted Solar Panel on Top)
92x164.5x305mm
Weight
Camera Approx. 745 g
5.5W Solar Panel Approx. 308 g
Power Port
USB-C
Button
SYNC*1
Fusion Link
Yes
Wireless Connection
802.11b/g/n/ax (2.4GHz) Wi-Fi
FAQ
What’s in the box?
Camera × 1
Rechargeable Battery* × 1
Camera Mounting Bracket × 1
Positioning Sticker (Camera Mount) × 1
Screw Pack (Camera) × 1
USB Charging Cable × 1
Solar Panel × 1
Solar Panel Mounting Bracket × 1
Positioning Sticker (Solar Panel Mounting Bracket) × 1
Solar Panel Extension Cable × 1
Screw Pack (Solar Panel) × 1
Quick Start Guide× 1
* The rechargeable battery may be pre-installed in the camera or included separately in the package.
What's the difference between this bullet-ptz camera and using two separate cameras?
The two built-in cameras work together more intelligently than separate devices, providing both a full view and a detailed close-up from a single installation. Auto-tracking begins with either camera, then PTZ zooms in and follows the action. Tap in the app to instantly move the PTZ to a point on the bullet cam's view.
How does bullet-to-PTZ tracking work?
The fixed camera detects motion and triggers the PTZ to rotate and zoom using AI tracking. If the bullet and PTZ angles differ, tracking handoff may be slower. For faster response, point the PTZ toward your key area for quicker detection.
How do I get the best performance from my solar panel?
Orientation and tilt angle are key. Face the panel toward the equator (e.g., south in the Northern Hemisphere), place it in a shadow-free spot, and set a 30°–45° tilt based on your latitude—flatter in summer, steeper in winter for maximum charging.
Does eufyCam S4 support 24/7 recording?
Yes, connect it to direct power (5V/2A+ adapter or higher) for 24/7 recording (requires camera version V1.0.5.4+). A microSD card or hard drive is required for storage (when connected to HomeBase™ 3, requires HomeBase™ version V3.7.2.8 or later).
What is eufyCam S4's preset positon feature?
The preset position feature lets you save specific camera angles and set one as the default position. With one tap, the camera moves quickly to any saved spot, making it easy to monitor key areas.
Can it work standalone or with other Hombases / HomeKit?
It works as a standalone device (connected directly to your router) or with HomeBase™ S380 for more features.
HomeBase™ 2 , Homebase™ mini, Homebase™ Professional, eufy NVR and Apple HomeKit are not currently supported.
What privacy features does eufyCam S4 have?
It supports dynamic privacy zones, keeping designated areas masked during PTZ movement. All footage is stored locally with advanced encryption, ensuring continuous privacy protection and secure data storage.
What is Fusion Link?
Fusion Link acts as an expansion port for future eufy accessories, including support for long-range image transmission and more.
Note: HomeBase™ S380 is required for Fusion Link.