VIOFO T340W 3CH Built-In Cabin + Waterproof Rear Dash Cam - 4K, Dual STARVIS 2, 8m Cable

Three Channels, Two Cameras to Mount. The VIOFO T340W 3CH puts the cabin camera inside the front unit and the rear camera outside in the weather

A three-channel dash cam normally means three modules and three cable runs, and the cabin one is always the awkward job: another box on the glass and another lead tucked into the headlining. Then there is the rear. Fit a conventional rear camera to a dual-cab with a canopy, a van with no rear window or a wagon packed to the roof, and that channel spends its life filming the inside of your own vehicle.

Trusted AU store: We're an authorised Australian reseller, shipping from Melbourne within 24 hours^*. You get an 18-month warranty with no product registration required, local technical support, and our 30-Day No-Worries returns.

Who This Isn't For: The cabin camera is fixed inside the front unit behind the mirror, so you cannot move it, angle it at the back seats or run it down the headlining, and it uses an OmniVision OS04J10 sensor rather than the Sony STARVIS 2 that the front and rear channels get. If you want the cabin camera on its own cable and a 4K rear rather than 2K, take the VIOFO A229 Ultra W 3-CH. This one is for drivers who want the cabin covered with the least hardware on the windscreen.

Check Before You Order: This Is the 8 m Waterproof Rear Cable Version

VIOFO builds the T340W 3CH with four rear cable lengths. We stock one, the 8 m option, which suits most Australian cars, utes, vans and small trucks.

• What 8 m means: the extension cable in the box measures 7.5 m, the rest being the camera lead.
• No cabin cable to run: the interior camera is part of the front unit, so there is no third lead and no second mounting point.
• Longer runs: the 10 m and 15 m rear cables for trailers and long-wheelbase trucks are not stocked here. If your run is much over 7 m, talk to us before you order.

DCG Highlights

What We Love

• The cabin camera is built into the front unit with its own infrared LEDs, so a three-channel install needs two mounting points instead of three and nothing extra appears on the windscreen
• The rear camera is the RWC400, an IP67 waterproof module, so it screws to the tailgate, above the number plate or beside a roof aerial and keeps working through rain, dust and the wash bay
• Sony STARVIS 2 sensors on both road-facing channels, an IMX678 up front and an IMX675 at the rear, which is why plates stay readable after dark rather than turning to grain
• A 210 degree cabin lens is wide enough to take in both front seats and both side windows at once, which is the frame a rideshare driver actually needs
• HDR runs on all three channels, so headlights at night and hard backlighting at dusk do not wash out the detail that identifies a vehicle
• No screen and a body that sits behind the mirror, so there is nothing to glance at while driving and nothing obvious to anyone looking into a parked car

Good to Know

• Parking mode of any kind needs the VIOFO HK6-F hardwire kit, bought separately. The car charger in the box runs the camera while the engine is running and nothing more.
• No memory card is supplied, and three channels of 4K and 2K fill a card quickly. Budget for a high-endurance 256 GB or 512 GB card at the same time.
• The waterproof rear camera mounts outside the vehicle, so the cable needs an existing grommet or a drilled pass-through. That is a proper install, not a stick-and-go.
• With no screen, first setup and all playback happen through the VIOFO app on your phone.

Why a Built-In Cabin Camera Changes the Install

A conventional three-channel dash cam splits the job across three separate cameras, and the interior one is the module that causes the trouble. It needs its own position on the glass or the headlining, its own cable tucked behind trim, and enough clearance that it is not sitting in the driver's eyeline. The T340W removes that decision by moving the interior camera inside the front housing, behind a 210 degree fisheye lens with its own infrared LEDs. Two cameras go on the vehicle and three channels get recorded. The trade-off is fixed framing: the cabin view is whatever the front unit's position gives you, so where you place that unit now decides two channels instead of one.

Top Benefits

• Less hardware on the glass: the cabin camera lives inside the front unit, so a three-channel install puts two cameras on the vehicle instead of three.
• Rear cover that works: the IP67 RWC400 mounts outside, so a canopy, a tray or a loaded boot no longer blocks the rear channel.
• Passengers and side windows in frame: the 210 degree lens with infrared LEDs covers both front seats and both side windows, day or night.
• Readable plates after dark: Sony STARVIS 2 sensors front and rear with HDR on every channel hold detail against headlights instead of blooming out.
• One file, three angles: merged multi-channel export means the footage you hand over is a single synchronised video, not a folder of clips to explain.
• Parking cover that protects the battery: add the HK6-F and hybrid recording drops back to low-power impact detection at the cut-off you set.

How It Installs

1. Mount the front unit behind the mirror on the supplied bracket, using a windscreen static sticker so the adhesive is not going onto glass, then fit the magnetic CPL-700 filter.
2. Check the cabin framing in the VIOFO app before you commit to the position. The interior lens is fixed in the front unit, so this step sets two channels at once.
3. Mount the waterproof rear camera outside with the two supplied screws and route the 7.5 m cable through an existing grommet where you can find one. This step decides how long the job takes.
4. Power it from the supplied 3.5 m car charger for drive-only recording, or fit the HK6-F to the fuse box if you want parking mode.
5. Fit the tamper-resistant cover with its four screws and the hex key, then finish the setup in the app.

Allow around forty-five minutes in a car you know, longer on a ute or van. We do not install cameras ourselves, but you can find someone local in our directory of independent installers. They are independent businesses, so you book and contract directly with them.

What's in the Box

• T340W front unit with built-in infrared cabin camera and bracket, RWC400 waterproof rear camera with 2 screws
• Waterproof rear extension cable 7.5 m, dual-port car charger 3.5 m, Type-C data cable 0.5 m
• CPL-700 magnetic front filter, infrared cabin camera cover, tamper-resistant cover with 4 screws and a hex key
• Spare mount sticky pads, windscreen static stickers, warning sticker, trim removal tool, quick start guide and service card
• Not included: microSD card, hardwire kit, BTR200 remote and BP100 or BP60 battery pack are all sold separately

Fitment and Compatibility

• Vehicles: any 12 V or 24 V vehicle. The exterior rear camera suits dual-cab utes with canopies or trays, vans without rear glass, and camper or 4WD builds.
• Rear camera mounting: external only. The RWC400 screws to bodywork, a plate surround or a roof bar, and is not made to stick inside glass.
• Cabin camera: fixed inside the front unit. It cannot be relocated, extended or aimed separately from the front camera.
• Parking mode: requires the HK6-F, the only hardwire kit for the T330 and T340 series. Earlier HK3 and HK4 kits do not fit.
• Replacement rear camera: the VIOFO RWC400, the same IP67 module supplied in the box.
• Accessories: VIOFO BTR200 Bluetooth remote, and the BP100 or BP60 battery packs for parking mode on their own power, all sold separately.
• Storage: microSD only, up to 512 GB. No external SSD support.
• Not compatible with: rear cameras from the A129, A139 and A229 families, the CPL-200 and CPL-300 filters, and any hardwire kit but the HK6-F.
• Australian fitment note: VIOFO's mounting photography is shot on left-hand-drive cars. The hardware is identical here, but the tidy cable path runs down the opposite A-pillar to the one in their images.

Add Yours Today

Add the T340W 3CH to your cart and we'll have it out of Melbourne within 24 hours^*. For parking mode from day one add the HK6-F hardwire kit, and pick a high-endurance card from our memory card range, because three channels will not record without one. Still comparing layouts? The rest of the range sits in 3 channel dash cams. Every camera is covered by our 30-Day No-Worries returns. If you would rather not drill the rear camera in yourself, our directory of independent installers will find someone local.

Last updated: September 2026

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VIOFO's Own Product Description

Below is VIOFO's own description of the T340W 3CH, reproduced from their product page with their images and launch video, so you can compare their words with ours. Punctuation has been normalised to match the rest of our site. Everything below this line is VIOFO's copy, not ours.

T340W 3CH - Rain or Shine, Cabin Covered

T340W 3CH combines a 4K front camera, built-in 2K IR cabin camera and 2K waterproof rear camera in a synchronized three-channel system. Wi-Fi 6, built-in GPS and five parking recording modes extend coverage to exterior rear-camera installations.

Every Perspective, Perfectly Captured

Keep eyes on every angle at once. With a 4K front, a 2K cabin, and a 2K waterproof rear camera, the T340W 3CH monitors the road ahead, the interior, and behind simultaneously, delivering complete coverage for total confidence on the road.

Dual STARVIS 2 Sensors - Low-Light Visibility, Superior Detail

Readable Plates, Day or Night. With Sony STARVIS 2 sensors and multi-channel HDR, the T340 adapts to extreme lighting changes effortlessly. From direct headlights to blinding backlighting, key details and license plates remain sharp and readable.

Always Clear, Even in the Dark. Equipped with Sony STARVIS 2 sensors, the T340 offers a wider dynamic range and superior low-light sensitivity. Drive confidently knowing it captures sharp license plates and roadside details, even on pitch-black roads.

Exceptional Clarity, Stunning Detail

See everything clearly in true 4K at 30 fps with HDR. Whether it's a distant license plate or fast-moving vehicles, the T340 ensures every frame serves as solid proof when it matters most.

Cabin to Side, All in Sight

Capture the entire cabin and side window views simultaneously in 2K. The 210 degree ultra-wide lens, along with the built-in IR LEDs, guarantees comprehensive protection for your cabin, day or night, perfect for both rideshare drivers and families.

All-Weather Rear Protection

Featuring a waterproof housing and clear 2K HDR resolution, this rear camera tames harsh lighting and handles severe weather, ensuring you have the solid evidence needed to stay protected against tailgaters and rear-end incidents in any weather.

Faster Transfers, Instant Downloads

Experience faster, more stable transfer with dual-band (2.4 GHz and 5 GHz) Wi-Fi 6 technology. Use the VIOFO Dashcam App to preview live footage, update settings, and save videos to your phone in seconds without cables.

Say the Word, Stay in Control

Focus on driving while the T340 handles the rest. Easily lock footage or take snapshots using simple voice commands in multiple languages. Proactive voice alerts keep you informed of memory card errors or setting changes for total peace of mind on the road.

Precise Tracking, Powerful Evidence

From city drives to cross-country trips, the T340 keeps every mile documented. Quad-mode satellite coverage (GPS, BeiDou, Galileo, and GLONASS) provides clear, reliable records of your speed, location, and timestamps on every video playback.

One Single File, Instant Sharing

Merge multiple camera feeds into a single video file for full-coverage playback. The T340 makes it easy to generate multi-perspective footage that's ready to review, export, or share instantly, with no editing required.

Parking Mode: 24/7 Peace of Mind

Capture More, Consume Less. Hybrid parking starts in time-lapse, low-bitrate or event-detection recording, then switches to impact detection once your set cut-off time or battery voltage is reached.

Ultra-Low Draw, Instant Guard. Very low power draw makes this mode ideal for long parking sessions. The T340 waits in standby with impact detection always on, waking within 2 seconds to record a one-minute clip.

Set Zones, Save Power. Define trusted locations, your home garage or workplace, and the T340 shuts down there instead of entering parking mode. Enable Low Power Impact Recording to keep impact detection on inside those zones.

Longer Parking, Zero Battery Drain

Pair with the VIOFO BP100 or BP60 battery pack (sold separately) and parking mode runs on the battery pack's own power, for hours longer, with your vehicle battery untouched.

Press It, Protect It

One touch is all it takes. Alongside automatic G-sensor impact locking, the side button lets you instantly secure key moments whenever you want. Footage of road incidents, hit-and-runs, or close calls won't be overwritten easily.

Cleaner Installation, Better Protection

Protect your dash cam from unauthorized access. The tamper-resistant cover prevents unauthorized tampering or accidental disconnections while maintaining a clean, professional install.

Slim Design, Neat Installation

Easily tuck the ultra-slim coaxial cables behind car panels for a clean, hidden install. Get high-speed and interference-free performance that keeps your electronics running smoothly.

Two Ports, Double Convenience

Charge two devices at once. Featuring a 30W Type-C fast-charging port and a 15W dash cam port, this car charger includes a soft-glow ring for quick, easy plugging at night.

No Glare, No Reflections

Cut through glare with ease. The snap-on magnetic front CPL filter reduces windshield reflections and road glare, delivering clear and natural-looking footage.

One Press, Safety Access

Stick the Bluetooth remote anywhere convenient to secure critical footage in one press and configure the side buttons to access your favorite features instantly.

Built to Record, Made to Last

Don't risk dropped frames or missing evidence. Built for constant dash cam recording, VIOFO industrial-grade microSD cards ensure smooth, error-free storage on every journey.