Turn Two Twin Beds into One King with the Flexabed Sync Cable

The Flexabed Sync Cable is a new Flexabed-exclusive accessory that links two Twin XL adjustable bases together, allowing both sides to move in perfect sync from a single wireless remote while preserving the option for independent control whenever each partner prefers it.

Why Split King Adjustable Beds Create a Problem Worth Solving

A split king setup gives couples the best of both worlds on paper: each person gets their own adjustable base, their own position, and their own sleep preferences, all in a king-sized footprint. In practice, the setup has one persistent drawback that couples notice quickly.

When you want to move together, you cannot. Watching a movie, reading in bed, or sitting up for breakfast both require each person to adjust their own side separately. The two beds operate as entirely separate units, which is exactly what they are. The split king feeling is convenient for independence and inconvenient for connection.

That is the problem the Sync Cable was designed to solve. Research consistently links quality sleep in couples to relationship satisfaction, and sleep science published through the National Library of Medicine highlights that coordinated sleep environments can reduce nighttime disturbances and support restful sleep for both partners. A synchronized split king addresses the coordination problem directly.

What the Flexabed Sync Cable Does

The Sync Cable links the control boxes of two Twin XL Flexabed bases so that both move together as a single unit when commanded. Once plugged in, a single wireless remote controls both sides simultaneously. The head and foot positions adjust together, creating the feel of sleeping on one unified king rather than two separate twins pushed together.

Crucially, the cable is not permanent. Unplugging one end from either control box returns both bases to fully independent operation immediately, with no reprogramming and no reset required. The switch between synchronized and independent control is a physical cable connection, not a setting buried in an app.

This is a Flexabed-only feature. As Flexabed states directly: "An equivalent to our Sync Cable is not currently offered by other adjustable bed manufacturers. We're proud to be the first to offer this kind of accessory." No comparable product exists in the adjustable bed market at the time of writing.

3 Reasons the Sync Cable Makes a Split King Setup Better for Couples

1. Move together without coordinating separately. Sitting up to watch television, raising the head for breakfast in bed, or adjusting for a reading position no longer requires two separate remote actions. One press moves both sides in the same direction at the same time.

2. Keep independent control when you need it. The cable is not a permanent configuration. When one partner wants to sleep flat while the other wants an elevated head position, unplugging returns each base to its own independent control in seconds. The flexibility of a split king stays fully intact.

3. No tools, no technician, no complicated setup. The Sync Cable installs the same way a telephone cord plugs into a wall: line up the connector, push it in, and you're done. There is nothing to program, no app required, and no adjustment period. It works immediately after connection.

Compatible Models: What You Need Before Adding the Sync Cable

The Sync Cable is compatible with two Flexabed models. Both require a wireless remote to work, since the cable connects to each base's control box and communicates through the wireless system.

The Flexabed Premier is Flexabed's flagship residential adjustable bed, hand-built in the USA and available in Twin, Full, Queen, Split Queen, King, and Split King sizes. For a sync cable setup, you need two Twin XL Premier bases with wireless remotes selected at the time of ordering.

Key specs relevant to a split king setup:

• Sizes: Split King (two 38" x 80" Twin XL units)
• Weight Capacity: 300 lbs standard; 400 lbs with Heavy Duty Reinforcement upgrade
• Head Lift: Up to 70 degrees
• Foot Lift: Up to 40 degrees
• Remote: Wireless required for Sync Cable compatibility
• Warranty: Lifetime limited on frame and mechanics

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Flexabed Hi-Low

The Flexabed Hi-Low adds full vertical height adjustment to the split king equation, raising and lowering the entire base from floor level to caregiver height. This makes it the right choice for couples where one partner has mobility or transfer needs in addition to standard positioning preferences.

Key specs relevant to a split king setup:

• Sizes: Split King available (two Twin XL units)
• Weight Capacity: 400 lbs per side (700 lbs combined split occupant; no single person over 400 lbs)
• Height Range: 11" fully lowered with leg pads to 18.5" fully raised (without mattress)
• Head Lift: Up to 70 degrees
• Foot Lift: Up to 40 degrees
• Remote: Wireless required for Sync Cable compatibility
• Warranty: Lifetime limited on frame and mechanics

Important note: Wired remote models of both the Premier and Hi-Low are not compatible with the Sync Cable. If you are configuring a new split king and plan to add the Sync Cable, select the wireless remote option at the time of purchase.

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How to Install the Sync Cable in 3 Steps

No tools. No technician. No complicated instructions.

1. Locate the control box on the first Twin XL base. The control box is the unit that manages the motor and remote signals on each base.
2. Plug one end of the Sync Cable into the first base's control box.
3. Plug the other end into the second base's control box. Both bases will now operate together from a single wireless remote.

To return to independent control: unplug one end of the cable from either control box. That is the entire process.

Flexabed recommends matching both bases to the same model and both mattresses to the same type for the smoothest synchronized performance. Mixing models or mattress types may result in slightly different movement responses between the two sides, which reduces the benefit of synchronization.

The Sync Cable Does Not Affect Your Warranty

This is worth stating clearly for existing Flexabed owners considering adding this accessory after purchase. The Sync Cable does not void or affect the Flexabed lifetime limited warranty on either base. Adding it does not constitute a modification that changes your coverage.

Frequently Asked Questions

What is the Flexabed Sync Cable?

The Flexabed Sync Cable is a new Flexabed-exclusive accessory that connects two Twin XL adjustable bases so they move together as one king bed from a single wireless remote. It is currently the only product of its kind available from any adjustable bed manufacturer.

What Flexabed models is the Sync Cable compatible with?

The Sync Cable is compatible with the Flexabed Premier and the Flexabed Hi-Low, both with wireless remotes. Wired remote models are not compatible.

Can I still use each side independently after adding the Sync Cable?

Yes. Unplug one end of the cable from either control box and both bases return to fully independent control immediately. No reprogramming or resetting is needed.

Is the Sync Cable difficult to install?

No. Installation requires no tools and takes a few minutes. You plug one end of the cable into the first base's control box and the other end into the second. Both sides then operate together from your wireless remote.

Does the Sync Cable work with any split king adjustable bed?

No. The Sync Cable is designed specifically for Flexabed bases. It is not compatible with other brands or third-party adjustable bases.

Will adding the Sync Cable affect my Flexabed warranty?

No. The Sync Cable does not affect the lifetime limited warranty on the Flexabed Premier or Hi-Low frames and mechanics.

What is a Flexabed split king?

A Flexabed split king consists of two 38" x 80" Twin XL bases placed side by side to create a king-sized sleep surface. Each base operates independently by default, allowing each partner to adjust their own side. The Sync Cable adds the option to synchronize both sides to move together.