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Dexcom ONE Transmitter

  • Wireless transmitter for Dexcom ONE CGM system
  • Sends real‑time glucose readings to your smartphone
  • Reusable up to 90 days for continuous diabetes monitoring
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In stock

£26.99
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Fast & Free Delivery Options

Variety of delivery options including next day & free delivery.

100% UK-based Pharmacy

Pharmacy, clinic and prescribers based in Greater Manchester.

Free Online Consultations

Start your treatment with a quick and free online consultation.

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About Dexcom ONE Transmitter

The Dexcom ONE Transmitter is an essential component of the Dexcom ONE Continuous Glucose Monitoring (CGM) system, designed to help people with diabetes track glucose levels confidently and conveniently. When paired with a Dexcom ONE sensor, this small, durable transmitter sends real‑time glucose readings wirelessly to a compatible smartphone or dedicated receiver every few minutes. Dexcom ONE Transmitter lasts up to 90 days and is reusable across multiple sensors, making it ideal for long‑term glucose management.

 

Product Name Dexcom ONE Transmitter
Used With Dexcom ONE CGM Sensor
Main Function Sends real‑time glucose data to device
Transmission Type Bluetooth wireless data transfer
Battery Life Up to 90 days (approx. 3 months)
Compatibility Compatible smartphones & optional Dexcom ONE receiver
Water Resistance Water‑resistant for daily use (shower, swim) when paired sensor is worn
Prescription Needed? No – Medical Device

What Is the Dexcom ONE Transmitter Used For?

The Dexcom ONE Transmitter is used to send continuous glucose readings from the Dexcom ONE sensor to your smartphone or optional receiver in real time. This enables users to monitor glucose trends, receive alerts, and make informed diabetes management decisions without routine finger‑prick testing.

How the Dexcom ONE Transmitter Works

  • The transmitter clicks into the Dexcom ONE sensor and activates via the Dexcom ONE app on your compatible smartphone.
  • Once activated, it sends glucose level readings wirelessly every few minutes to display devices.
  • The device continues to transmit until the battery reaches the end of its 90‑day life, at which point it must be replaced.

Always follow the official instructions before attaching or activating the transmitter for optimal performance.

Who Can Use the Dexcom ONE Transmitter?

The Dexcom ONE Transmitter is suitable for people living with type 1 or type 2 diabetes who use the Dexcom ONE CGM system and want continuous glucose monitoring without frequent blood glucose finger pricks. Its reusable design across several sensors makes it cost‑effective for long‑term diabetes care.

Important Safety Information

  • Use only with Dexcom ONE sensors and the official Dexcom ONE app or compatible receiver.
  • Ensure your device is paired properly to receive accurate glucose data.
  • Check compatibility with your smartphone model before use.
  • Do not attempt to recharge or modify the transmitter battery.

Storage and Handling

  • Store in a cool, dry place before activation.
  • Keep out of reach of children.
  • Do not expose to extreme temperatures or immerse transmitter alone in water.

Dexcom ONE Transmitter Reviews

Our Experienced UK-based Pharmacy Team

Clinical Consultant
MUDr, MRCEM, EBCEM, FRCEM
GMC no. 7176414

Pharmacist
MPharm
GPhC no. 2065469

Pharmacist
MPharm
GPhC no. 2046514

Page content authored by Amjad Khan, last reviewed by Dr Hussain Ahmad on 6th February 2026.

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