E-Stim Systems - 2 mm to 4 mm Adapter - 2 pieces

Sometimes two devices are perfectly compatible electrically, but their plugs simply use different standards. The E-Stim Systems 2 mm to 4 mm Adapter solves exactly that problem. These compact adapters allow you to connect a cable with a 2 mm/TENS pin to an electrode with a 4 mm connector. You’ll receive two adapters right away, so you can use both connections on a bipolar 4 mm electrode.
This small adapter can be surprisingly handy, especially when you want to combine a TENS unit, an imported electrosex power box, or equipment from another brand with E-Stim Systems electrodes. No need for a whole new set of cables when an adapter is all you need: two small adapters easily bridge the gap between 2 and 4 mm.

From 2 mm/TENS to a 4 mm electrode

In e-stim, the orientation of an adapter is important. This version is intended for situations where you have a 2 mm/TENS pin on the cable side and need a 4 mm connection on the electrode side.
The 2 mm pin is inserted into the adapter. The other end of the adapter then fits into the 4 mm socket of a compatible electrode. The adapter does not alter the electrical signal or add any additional programs; it simply provides the physical connection between two different connector standards.
That may sound like a modest task, but without the right connector, even the most powerful TENS unit is electrically helpless.

Useful for TENS cables and other brands

E-Stim Systems has developed these adapters specifically for users who want to combine a TENS or 2 mm connectorwith electrodes equipped with 4 mm sockets.
According to the manufacturer, they’re especially practical for non-standard or imported TENS units. Many such devices use cables that end on the electrode side with the familiar thin TENS pins. With these adapters, such cables can be connected to many electrodes from the E-Stim Systems lineup.
This also makes the set useful when combining equipment and electrodes from different manufacturers. Always check the connectors on both your cable and the electrode beforehand. This is because E-stim uses multiple connector formats that can look deceptively similar in a product photo.

Two adapters in one package

The E-Stim Systems 2 mm to 4 mm Adapter comes as a set of two. This is no coincidence.
Many bipolar E-Stim Systems electrodes have two 4 mm sockets. If you want to use such an electrode with a cable that has two 2 mm/TENS pins, you’ll need one adapter for each pin. With the included pair, you can convert both connections right away.
In a monopolar configuration, the required connection may differ depending on the chosen second contact point. Therefore, always check the complete combination of power box, cable, adapter, and electrode before you begin.
Note: Not suitable for every E-Stim electrode
Although many E-Stim Systems electrodes use 4 mm sockets, the manufacturer warns that, due to their physical dimensions, these adapters are not suitable for the E-Stim Systems Classic Range and the Small Magnum Electrode.
This has nothing to do with the nominal 4 mm connector itself, but rather with the available space around the connector. The adapter’s housing does not fit properly with these specific electrodes.
In such situations, it’s wiser to choose a cable that provides the required connection directly. After all, a matching plug should simply fit; a hammer is rarely the right adapter for electroplay.

Do not confuse this with the 4 mm to 2 mm adapter

E-Stim Systems also offers an adapter that enables the opposite direction. This can easily lead to confusion when ordering.
Do you have a cable with a 4 mm plug and want to connect it to an electrode with a 2 mm socket? Then you’ll need the E-Stim Systems 4 mm to 2 mm Adapter.
Do you have a 2 mm/TENS pin and want to connect it to an electrode with a 4 mm socket? Then this 2 mm to 4 mm adapter is the right choice.

Check your entire connection

E-Stim Systems typically uses a 3.5 mm output on its own power boxes. The choice between a 2 mm or 4 mm connection then mainly depends on the electrode end of the cable being used.
Many E-Stim Systems insertable electrodes use 4 mm sockets, while self-adhesive pads typically use 2 mm/TENS connectors. Equipment from other manufacturers may use different combinations.
Therefore, don’t focus solely on the connector on the power box. Be sure to check what type of connector is at the end of your current cable and what type of socket your electrode has.

Connecting Safely

Always turn off the power box before connecting cables, adapters, and electrodes. Carefully push the connectors into place and check that everything is securely attached before turning on the device.
Then start at the lowest intensity and increase it gradually. An adapter does not alter the electrical properties of the powerbox being used and does not automatically make an unsuitable electrode or configuration suitable.
Therefore, always follow the safety instructions for the e-stim equipment you are using. E-Stim Systems recommends that beginners keep all electrical contact points and current paths below the waist and avoid using e-stim around the head or neck. Also, avoid current paths that may run through the chest area.

General Features

• Brand: E-Stim Systems
• Type: e-stim adapter
• From 2 mm/TENS to 4 mm
• For cables with 2 mm/TENS pins
• For compatible electrodes with 4 mm sockets
• Convenient for TENS units and equipment from other manufacturers
• Sold as a pair
• Quantity: 2 pieces
• Not compatible with the E-Stim Systems Classic Range
• Not compatible with the E-Stim Systems Small Magnum Electrode
• 12-month manufacturer’s warranty subject to E-Stim Systems’ terms and conditions

FAQ

What is the E-Stim Systems 2 mm to 4 mm Adapter - 2-Pack used for?
You use these adapters when you want to connect a cable with 2 mm/TENS pins to a compatible electrode with 4 mm sockets. They are particularly useful with certain TENS units and e-stim devices from other brands.
Which end of the E-Stim Systems 2 mm to 4 mm Adapter (2-pack) should be used?
The connection goes from 2 mm/TENS on the cable end to 4 mm on the electrode end. If you have a cable with 4 mm plugs and an electrode with 2 mm sockets, you’ll need the opposite adapter: the 4 mm to 2 mm adapter.
Why are there two E-Stim Systems 2 mm to 4 mm Adapters in the package?
Many bipolar electrodes have two 4 mm connectors. A standard TENS cable typically has two 2 mm pins. With the included pair, you can adapt both connections from 2 mm to 4 mm.
Does the E-Stim Systems 2 mm to 4 mm Adapter (2-pack) fit every E-Stim electrode?
No. E-Stim Systems explicitly states that, due to their size, these adapters are not compatible with the Classic Range or the Small Magnum Electrode. If in doubt, always check which connector and cable are recommended for your specific electrode.
With the E-Stim Systems 2 mm to 4 mm Adapter, a two-millimeter difference doesn’t have to mean the end of the connection. Two small adapters, one practical bridge between TENS pins and 4 mm electrodes. We ship the set quickly, carefully, and in discreet packaging.