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Reolink W840

4K Ultra HD Wi-Fi 6 High-Speed PTZ with 5x Optical Zoom & Auto-Tracking

4K 8MP Ultra HD Resolution for Clarity
360° Pan and Tilt with Auto-Tracking
5× Optical Zoom for Detailed Close-Ups
Dual-Band WiFi 6 for Stable Connection
Color Night Vision with Built-In Spotlights
Smart Person, Vehicle, and Animal Detection

Price range: RM1,899.00 through RM2,649.00

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Reolink W840

W840 Video

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Disclaimer: The videos are intended for reference purposes only and are not guaranteed to be 100% accurate. Please refer to the actual product or contact us for verification.

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4K UHD Video, 5× Optical Zoom & Optical Specifications

What video resolution and frame rate does the Reolink W840 deliver?

A: The Reolink W840 delivers 4K Ultra HD video at 3840x2160 resolution (8 Megapixels) at up to 20 frames per second (fps). It features an advanced 1/2.8-inch CMOS image sensor that captures four times the clarity of traditional 1080p Full HD cameras. The mainstream frame rate can be configured between 2 fps and 20 fps (default is 20 fps), while the substream runs between 4 fps and 15 fps (default is 10 fps).

What type of optical zoom lens is built into the camera?

A: The camera is equipped with a motorized 5X optical zoom varifocal lens with a focal length of f = 2.7 mm to 13.5 mm and a maximum aperture of F1.6. This motorized optical zoom allows you to zoom in on distant objects (such as license plates, human faces, or property gates) with optical sharpness without degrading 4K image quality, or zoom out for wider scene overview.

What is the Field of View (FOV) across the 5× optical zoom range?

A: Because of the motorized 5× optical varifocal lens, the field of view adjusts smoothly across the zoom range:

Which video compression codecs and bitrates does the camera support?

A: The W840 supports both advanced H.265 (HEVC) and standard H.264 video compression formats. The mainstream bitrate is adjustable from 2048 Kbps to 5120 Kbps (default is 4096 Kbps), while the substream bitrate ranges from 64 Kbps to 512 Kbps (default is 256 Kbps), optimizing network transmission efficiency and storage consumption.

Does the camera support digital zoom in addition to 5× optical zoom?

A: Yes. In addition to motorized 5× optical zoom, you can perform smooth digital magnification via the Reolink App or Reolink Client software to inspect fine details across the 8-megapixel video canvas.

360-Degree Endless PTZ, Auto-Tracking & Preset Patrols

What are the motorized pan and tilt rotation ranges of the Reolink W840?

A: The camera is mounted on a high-precision mechanical pan/tilt gimbal base providing:

What are the configurable pan and tilt rotation speeds?

A: The pan and tilt speeds are fully adjustable in the camera settings:

What is Auto-Tracking and how does it function on the W840?

A: Auto-Tracking coordinates the high-speed motorized gimbal with on-device AI algorithms. When an authorized target (a person, vehicle, or animal) enters the monitoring area, the camera automatically pans, tilts, and adjusts its zoom to follow the subject across your property, keeping the target centered in the frame.

How many preset positions, patrol paths, and guard positions can be configured?

A: The camera supports:

1 customizable Guard Position: The designated default home orientation the camera automatically returns to after completing a tracking event or manual navigation session.
Up to 64 user-defined Preset Positions: Pre-saved viewing angles that you can jump to with a single tap.
1 Automated Patrol Route: An automated cruising route linking up to 16 preset positions with custom dwell times.

Does the camera feature power-off position memory?

A: Yes. The W840 features built-in Power-off Memory. In the event of a power outage or system reboot, the camera automatically restores its pre-calibrated gimbal coordinates, designated Guard Position, and configured preset points when power returns.

Long-Range Night Vision, 4000K Spotlights & Two-Way Audio

How far does the infrared (IR) night vision reach on the W840?

A: The camera delivers long-range black-and-white infrared night vision up to 60 meters (190 feet) in total darkness. It utilizes an array of 7 high-power 850nm IR LEDs (consuming up to 5.5W maximum power) paired with an automatic IR-cut filter that transitions seamlessly between day and night modes.

What are the specifications of the built-in spotlights and color night vision?

A: The W840 is equipped with 2 integrated high-output spotlights consuming 4W of power and producing a 4000K warm white color temperature. When the spotlights activate in dark conditions, they illuminate the surrounding area to capture vibrant full-color night surveillance video.

What lighting modes can be configured for the built-in spotlights?

A: Through the Reolink App or Client software, you can configure three spotlight lighting modes:

Alarm-Triggered (Auto): Spotlights remain off during standby (utilizing long-range covert IR night vision) and turn on or flash automatically when an AI-classified person, vehicle, or animal is detected.
Always On: Spotlights automatically turn on at dusk and remain illuminated throughout the night.
Manually Off: Disables the spotlights completely, keeping the camera operating strictly in black-and-white infrared mode.

Does the Reolink W840 support two-way interactive voice communication?

A: Yes. The camera features an integrated high-sensitivity microphone and a built-in high-output loudspeaker. This enables real-time, full-duplex two-way voice conversations with visitors, couriers, or potential trespassers directly through the Reolink App or Client software.

Can the spotlights and siren activate automatically upon intrusion detection?

A: Yes. You can configure the built-in spotlights and the internal audio siren alarm (or custom recorded voice warnings) to trigger automatically upon detecting a person, vehicle, or animal, creating an active deterrence barrier to warn off intruders before an incident occurs.

Dual-Band WiFi 6, Wired Connectivity & Initial Setup

What WiFi standards and frequency bands does the W840 support?

A: The W840 supports next-generation dual-band WiFi 6 technology conforming to IEEE 802.11 a/b/g/n/ac/ax across both 2.4 GHz and 5 GHz frequency bands:

What wireless security encryption standards are supported?

A: The camera supports modern wireless security protocols including standard WPA-PSK and WPA2-PSK encryption, as well as the latest WPA3-SAE encryption standard, ensuring your video feeds are safeguarded against unauthorized network interception.

Does the camera have an RJ45 Ethernet port for wired connectivity?

A: Yes. In addition to dual-band WiFi 6, the camera includes an RJ45 10M/100Mbps Ethernet port on its tail cable. It comes supplied with an outdoor waterproof connector lid to seal the cable joint against rain, snow, and moisture penetration.

How do you perform the initial setup using the Reolink App?

A:

Screw the two external antennas firmly onto the antenna connectors on the camera body.
Connect the camera to your router's LAN port using the included Ethernet cable and power it on using the included DC 12V 2A power adapter.
Open the Reolink App on your smartphone, tap the "+" icon in the top right corner, and scan the QR code located on the camera label (or select "Input UID/IP" to manually enter the 16-character UID).
Create a secure administrator login password and assign a name to your camera.
Select your WiFi network (SSID), enter your WiFi password, and save the wireless configuration.
Once verified, unplug the Ethernet cable; the camera will automatically reconnect and stream over WiFi.

How many simultaneous live streams and user accounts are supported?

A: The W840 supports up to 20 configured user accounts (1 administrator account and 19 general user accounts) and up to 12 simultaneous live video streams (2 mainstreams and 10 substreams).

AI Smart Detection, 24/7 Continuous Recording & Storage

What smart AI detection capabilities are built into the W840?

A: Powered by on-device edge neural processing algorithms, the W840 recognizes and distinguishes between:

What recording schedules and modes can be configured on the camera?

A: Because the W840 connects to constant DC mains electricity, it supports three versatile recording modes:

Does the Reolink W840 support Time-Lapse video creation?

A: Yes. The W840 includes built-in Time-Lapse functionality, allowing you to compress long-term events—such as construction milestones, sunrises, backyard projects, or weather changes—into short, dynamic video clips via the Reolink App or Client software.

What is the maximum local MicroSD card capacity supported, and where is the slot located?

A: The camera supports onboard local storage via a MicroSD card slot accommodating cards up to 512GB (FAT32 or exFAT format, Class 10 or higher recommended). The MicroSD card slot and hardware reset button are located on the rotating camera sphere beneath a weather-sealed protective hatch secured by screws.

Can the W840 record to Reolink NVRs, Home Hub, or FTP/NAS servers?

A: Yes. The camera integrates across multiple centralized storage platforms:

Reolink NVRs: Connects to RLN8, RLN16, RLN36, or NVS12W (WiFi 6 NVR) over the local network for centralized 24/7 recording.
Reolink Home Hub: Wirelessly archives encrypted video across local storage drives without monthly cloud subscription fees.
Remote FTP / NAS Server: Automatically uploads continuous video feeds or motion-triggered clips via standard FTP/FTPS protocols.
Third-Party VMS: Integrates with Home Assistant, Blue Iris, and Synology Surveillance Station via native ONVIF and RTSP streaming.

Heavy-Duty Hardware, IP66 Weatherproofing & Physical Installation

How is the Reolink W840 powered, and does it support Power over Ethernet (PoE)?

A: The Reolink W840 is powered via an external DC 12.0V / 2A power supply (total power consumption is under 24W). It is a dedicated dual-band WiFi camera and does NOT support Power over Ethernet (PoE). It must be powered using the included DC 12V adapter, though its RJ45 Ethernet port can be used for wired data transmission.

What is the weatherproof rating and working temperature range of the W840?

A:

Weatherproof Rating: Certified IP66 waterproof and dustproof, engineered to withstand heavy rainstorms, snow, wind, and harsh outdoor weather conditions.
Operating Temperature: -10 degrees Celsius to +50 degrees Celsius (14 degrees Fahrenheit to 122 degrees Fahrenheit) (rated up to +55 degrees Celsius / 131 degrees Fahrenheit in operational guidelines).
Operating Humidity: 10% to 90% non-condensing.

What are the physical dimensions, weight, and antenna design of the camera?

A:

Form Factor: Commercial-grade high-speed PTZ dome camera with integrated convertible bracket
Dimensions: 373 mm (Height) x 177 mm (Depth) x 140 mm (Width) in ceiling/wall mount configuration; base profile width is 140 mm
Weight: Approximately 2.34 kg (5.16 lbs)
Antennas: Dual external omnidirectional WiFi antennas designed for high-gain wireless reception

How does the convertible bracket support both wall and ceiling mounting?

A: The camera includes an innovative convertible multi-angle mounting bracket:

Wall Mounting: Install antennas, connect the included safety wire rope anchor between the bracket and camera, place the template on the wall, drill holes, insert anchors, hang the bracket over the top two screws, and fasten the lower two screws securely.
Ceiling Mounting: Loosen the screws to detach the camera from the bracket, loosen the internal and external adjustment screws on the bracket arm, swivel the bracket arm so it is vertical to the ceiling, retighten the bracket screws, re-attach the safety wire rope anchor, and secure the bracket base firmly to the ceiling using the mounting template and screws.

What items are included in the standard retail package, and what warranty coverage is provided?

A: Retail Package Contents:

Reolink W840 (RLC-823S1W) Camera
DC 12V / 2A Power Adapter
4.5-Meter Power Extension Cable
1-Meter Ethernet Network Cable
Mounting Hole Template
Pack of Screws
Drywall Anchors
Wire Rope Anchor (Safety Tether)
Waterproof RJ45 Cable Connector Lid
24-Hour Video Surveillance Warning Sticker
Quick Start Guide
Operational Instructions

A: Warranty:

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Reolink W840

4K Ultra HD Wi-Fi 6 High-Speed PTZ with 5x Optical Zoom & Auto-Tracking

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A: Because of the motorized 5× optical varifocal lens, the field of view adjusts smoothly across the zoom range:

A: Yes. In addition to motorized 5× optical zoom, you can perform smooth digital magnification via the Reolink App or Reolink Client software to inspect fine details across the 8-megapixel video canvas.

A: The camera is mounted on a high-precision mechanical pan/tilt gimbal base providing:

A: The pan and tilt speeds are fully adjustable in the camera settings:

A: The camera supports:

A: Yes. The W840 features built-in Power-off Memory. In the event of a power outage or system reboot, the camera automatically restores its pre-calibrated gimbal coordinates, designated Guard Position, and configured preset points when power returns.

A: The W840 is equipped with 2 integrated high-output spotlights consuming 4W of power and producing a 4000K warm white color temperature. When the spotlights activate in dark conditions, they illuminate the surrounding area to capture vibrant full-color night surveillance video.

A: Through the Reolink App or Client software, you can configure three spotlight lighting modes:

A: Yes. The camera features an integrated high-sensitivity microphone and a built-in high-output loudspeaker. This enables real-time, full-duplex two-way voice conversations with visitors, couriers, or potential trespassers directly through the Reolink App or Client software.

A: Yes. You can configure the built-in spotlights and the internal audio siren alarm (or custom recorded voice warnings) to trigger automatically upon detecting a person, vehicle, or animal, creating an active deterrence barrier to warn off intruders before an incident occurs.

A: The W840 supports next-generation dual-band WiFi 6 technology conforming to IEEE 802.11 a/b/g/n/ac/ax across both 2.4 GHz and 5 GHz frequency bands:

A: The camera supports modern wireless security protocols including standard WPA-PSK and WPA2-PSK encryption, as well as the latest WPA3-SAE encryption standard, ensuring your video feeds are safeguarded against unauthorized network interception.

A: Yes. In addition to dual-band WiFi 6, the camera includes an RJ45 10M/100Mbps Ethernet port on its tail cable. It comes supplied with an outdoor waterproof connector lid to seal the cable joint against rain, snow, and moisture penetration.

A:

A: The W840 supports up to 20 configured user accounts (1 administrator account and 19 general user accounts) and up to 12 simultaneous live video streams (2 mainstreams and 10 substreams).

A: Powered by on-device edge neural processing algorithms, the W840 recognizes and distinguishes between:

A: Because the W840 connects to constant DC mains electricity, it supports three versatile recording modes:

A: Yes. The W840 includes built-in Time-Lapse functionality, allowing you to compress long-term events—such as construction milestones, sunrises, backyard projects, or weather changes—into short, dynamic video clips via the Reolink App or Client software.

A: Yes. The camera integrates across multiple centralized storage platforms:

A:

A:

A: The camera includes an innovative convertible multi-angle mounting bracket:

A: Retail Package Contents:

A: Warranty:

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