Tandem t:slim X2 - Basal-IQ Technology Software Update Now Available Click here

t:slim X2™ Insulin Pump with Basal-IQ Technology

Predicts and helps prevent lows with ZERO fingerpricks*

When life gets busy, the fear of going low can really get in your way. Our Basal-IQ predictive low-glucose suspend technology can help you spend less time worrying about lows and more time living your life.

The simple-to-use t:slim X2 Insulin Pump has a slim and sleek design and is the only available pump that is compatible with Dexcom G6 System which is indicated for making treatment decisions without a fingerprick.*†

Tandem t:slim X2 Insulin Pump is fully funded for eligible patients through Pharmac.  Click here to view Pharmac Funding Criteria for insulin pumps

For more information or to purchase, please contact NZMS Diabetes on 0800 500 226 or at diabetes@nzms.co.nz

Small Pump. Big Features.


So Simple and So Slim

The t:slim X2 Insulin Pump was designed to be user friendly. Touchscreen technology makes the t:slim X2 Insulin Pump simple to learn and simple to use.

The beauty of the t:slim X2 Insulin Pump is that it has a slim and sleek design yet it can hold a surprisingly large amount of insulin – up to 300 units. All thanks to our Micro-delivery® technology and an innovative, flat insulin cartridge design.

Rechargeable and Durable

The t:slim X2 Insulin Pump’s rechargeable battery can be charged from a wall outlet, the car, a power pack or a computer without interrupting insulin delivery. A charge lasts up to 7 days, so there is no need to worry about purchasing extra batteries!

The t:slim X2 Insulin Pump is also ultra-strong – the aluminium case is durable and light. The touchscreen is made of high grade, shatter-resistant glass. Plus, the t:slim X2 Insulin Pump is watertight,2 so there is no need to worry about it accidentally getting wet.

Simple to Personalise

Create up to 6 different personal profiles, and within each profile, create up to 16 different time segments that allow individual basal rates, insulin-to-carb ratios, correction factors, and target blood glucose levels. Profiles can be named individually so it’s easy to know which one to use!

Responsive Insulin Delivery

Basal-IQ® technology predicts and helps prevent lows. It can turn insulin delivery on and off as often as every 5 minutes. There is no minimum insulin suspension period.

Works Silently in the Background

No added alerts or alarms beyond standard continuous glucose monitoring (CGM) and pump notifications.* Users must only decide if they want the feature turned on or off.

How Basal-IQ works

The Basal-IQ feature helps reduce the frequency and duration of low-glucose events by predicting glucose levels 30 minutes ahead and suspending insulin if they are expected to drop below 4.4 mmol/L, or if a CGM reading falls below 3.9 mmol/L.

  1. An insulin pump is a device that holds a cartridge of insulin. The pump is worn 24 hours a day, and is programmed to deliver a steady rate of insulin (basal) through tubing known as an infusion set. When food is eaten or to correct a high glucose level, the pump can be programmed to deliver a set amount of insulin (bolus) to cover these factors.1
  2. Basal-IQ Clinical Study Results:
  3. Less Time Low
  4. 31% relative reduction in sensor time below 3.9 mmol/L when study participants used a t:slim X2 insulin pump with Basal-IQ technology.1
  5. Simple To Use
  6. Basal-IQ Clinical Study Results Simple To Use - 91% of study participants said the Basal-IQ feature on the t:slim X2 pump was easy to use.1

t:slim X2 Insulin Pump Specifications

General Specifications
Weight 112 grams (with full 300 unit cartridge)
Insulin Up to 300 units For use with U-100 fast-acting insulin^
Watertight Tested up to 1 metre for 30 minutes (IPX7 rating)
Alarms Adjustable volume, visual, vibratory Alerts/Reminders High BG (blood glucose), Low BG, After Bolus BG, Missed Meal Bolus, Site Change Reminder
Personal Profiles 6 customisable profiles
Timed Settings 16 timed settings per personal profile Basal rate, correction factor, carb ratio, target BG
Insulin Duration Two to eight hours in on-minute increments
Basal Rate 0.1 – 15 units/hr Increments: 0.001 units
Bolus Range: 0.05 – 25 units Increments: 0.01 unit
CGM Integration Dexcom G6 System

Frequently Asked Questions

For additional resources, please visit our resources page or contact NZMS Diabetes on 0800 500 226.

What cartridges and infusion sets are used with the t:slim X2 Insulin Pump?

The t:slim X2 Insulin Pump is compatible with the t:lock cartridge and the following t:lock infusion sets: AutoSoft™ 90, AutoSoft™ 30, TruSteel™.

Both infusion sets and cartridges are available through your local Pharmacy and on our online shop .

How long is the pump warranty for?

Your pump has a limited 4 year warranty from the date of original retail purchase.

Is this pump funded by PHARMAC ?

The t:slim X2 Insulin Pump and consumables are now fully funded for eligible patients.

For more information on pharmac funding for the t:slim X2 Insulin Pump click here. To find out if you qualify for funding please talk to your diabetes healthcare team.

Where can I purchase accessories for my t:slim X2 Insulin Pump?

Please visit our online shop to purchase accessories for the t:slim X2 Insulin Pump.

What support will I have from NZMS Diabetes?

NZMS Diabetes provide 24/7 technical support on 0508 634 103 for your t:slim X2 Insulin Pump as well as  Dexcom G6 and Dexcom G5 Mobile CGM Systems.

What if I need to travel and something happens to my pump?

NZMS Diabetes has a free loan scheme for those occasions,  give us a call us to book in a spare pump on 0800 500 226
Our Technical Support number also works from overseas:  +61 2 9882 3105  (please note this is not a toll free number)

Can I use newer, fast-acting insulins, like Fiasp, in your pumps?

Tandem pumps and cartridges are only indicated for use with Novolog and Humalog U-100 insulins. The safety and efficiacy of other insulins, including Fiasp, have not been established for use with Tandem pumps.

Importantly, clinical studies using our automated insulin delivery algorithms were only conducted using Humalog and Novolog U-100 insulins, which have different times of onset compared to Fiasp.

What happens if I use Fiasp in my pump anyway?

Tandem pumps and cartridges are only indicated for use with Novolog and Humalog U-100 insulins. Importantly, clinical studies using our automated insulin delivery algorithms were only conducted using Humalog and Novolog U-100 insulins, which have different times of onset compared to Fiasp.

If you use Fiasp in your pump and you begin experiencing persistent issues that can be attributed to insulin compatibility, we can’t guarantee your warranty will be honored.


Watch the video to learn more about the t:slim X2 Insulin Pump!

References and Important Risk Information

Always read the label and use only as directed. Read the warnings available on nzmsdiabetes.co.nz/resources before purchasing. Consult your healthcare professional to see if this product is right for you.

Basal-IQ technology is not a substitute for active self-management of your diabetes. Please see back cover for more information.

* If your glucose alerts and readings do not match your symptoms or expectations perform a fingerprick to confirm your blood glucose level.

1.Additional feature updates are not currently available for the t:slim X2 Pump with Dexcom G5 Mobile CGM integration and are subject to future regulatory approvals. Charges may apply.

2.Tested up to 1 metre for 30 minutes (IPX7 rating).

*CGM-based treatment requires fingerpricks for calibration; may result in hypoglycaemia if calibration is not performed, when taking paracetamol, or if symptoms/expectations do not match CGM readings. If symptoms persist, please contact your healthcare professional.
†The Dexcom G5 Mobile CGM transmitter can only be paired with one medical device (either a Dexcom receiver or t:slim X2 Insulin Pump) and one compatible mobile device (phone or tablet) at the same time.

This application is for demonstration purposes only and is not identical to the functionality of the t:slim X2 Insulin Pump. It should not be used for therapy decisions. To see which smart devices are compatible with the t:simulator App, please refer to the app’s full listing on The App Store and Google Play.

^Consult your healthcare professional to see which product is right for you.

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