# Traffic data receiver GARMIN GTM 21 FM TMC (vehicle-mounted)

**URL:** https://aio.lv/en/product--garmin-ps-m-gar-gtm21--10968111
**Data updated:** 2025-12-30 14:57 (EET)
**Category:** GPS Trackers & Receivers
**Manufacturer:** GARMIN
**Manufacturer code:** PS-M-GAR-GTM21
**EAN:** 4422190000492
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 22.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--garmin-ps-m-gar-gtm21--10968111

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

GARMIN GTM 21 is an FM TMC traffic data receiver designed to provide real-time traffic information to compatible Garmin navigation units. It receives traffic updates via FM broadcast (TMC) to enable route recalculation, congestion alerts and estimated delay information. Suited for drivers who need up-to-date traffic data to optimize routes and save travel time; easy to install in a vehicle and connects to compatible Garmin devices.

## Long description

Garmin GTM 21 FM TMC Traffic Data Receiver Bulk (Part Number 010-00566-18) is a vehicle-mounted FM TMC receiver that delivers real-time traffic information to compatible Garmin navigation devices. The GTM 21 includes a built-in TMC Pro lifetime license and receives traffic updates via FM broadcasts and TMC Pro data sources to enable route recalculation, congestion alerts and estimated delay information.
Advantages
The GTM 21 provides both standard TMC and enhanced TMC Pro traffic information, combining free crowd-sourced and public radio data with paid TMC Pro feeds that include sensor and floating car data. The unit offers automated, frequent traffic-message delivery and improved coverage where TMC Pro services are available. It is compact, easy to install in vehicles and can also serve as a replacement or spare 12/24V cable for compatible Garmin navigators.
Suitable for
Drivers who require up-to-date traffic updates for route recalculation and congestion avoidance
Use with compatible Garmin nüvi, StreetPilot and Zumo navigation units
Fleet vehicles or private cars where continuous traffic information is needed
Key specifications
Model: Garmin GTM 21 FM TMC Traffic Data Receiver
Part number: 010-00566-18
MPN: PS-M-GAR-GTM21
EAN: 4422190000492
Connection: vehicle-mounted 12/24V cable for compatible Garmin units
Includes: TMC Pro lifetime license (built-in)
Traffic sources: FM RDS/TMC (public radio), TMC Pro (T-Systems traffic feeds, sensor loops, FCD/floating vehicles)
Message throughput: standard TMC processing; TMC Pro up to ~100 messages/4 minutes (depending on region)
How to use
Connect the Garmin GTM 21 to the compatible Garmin navigation device using the vehicle power/data cable and mount the receiver according to the device instructions. Once powered, the receiver will tune FM RDS/TMC channels and, where available, receive TMC Pro service data. The connected Garmin navigator will process incoming traffic messages to display congestion warnings and automatically recalculate routes if required.
Usage recommendations
Verify device compatibility with your specific Garmin model (compatible series: nüvi 5xx/6xx/7xx/8xx, StreetPilot 5xx, Zumo 4xx/5xx/6xx auto mount). For best reception, position the receiver and its antenna where FM signal strength is optimal and follow the installation guidance in your navigator’s manual.

## FAQ

### How much does the GARMIN GTM 21 traffic data receiver cost, and is it available for purchase?

The price is 26.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Wednesday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All GARMIN products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized GARMIN service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10968111/61387663_large.webp