Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp
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Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp Product Description
Perfect for the shallow water fisherman who want traditional sonar, CHIRP ClearVü and CHIRP SideVü scanning sonar, this transom mounted transducer consistently displays fish arches as well as clear pictures of objects, structure and fish that pass below and to each side of your boat.
The CHIRP ClearVü/SideVü elements have a power rating of 500 W per element (1,500 W total) and operating frequencies of 455/800 kHz. The traditional sonar has a power rating of 500 W and operating frequencies of 77/200 kHz. It also includes a built-in fast response temperature sensor.
GT40-TM includes a 12-pin transducer with mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.
Anglers chasing bass in skinny water or scouting structure in shallow bays know the frustration of murky sonar returns. The Garmin GT40-TM changes that game entirely, blending traditional sonar arches with stunning photo-like DownVü and SideVü scans to reveal fish, weeds, and drop-offs like never before. Mounted easily on your transom, this versatile transducer excels where depth is limited, delivering razor-sharp images that help you pinpoint holding spots and trigger strikes.
Superior Scanning for Everyday Fishing
Imagine gliding over a flat with flats fish hugging the bottom— the GT40-TM's CHIRP DownVü paints a downward-facing picture so detailed, you can distinguish baitfish schools from keeper walleye. Switch to SideVü for side-scanning up to 500 feet out, uncovering hidden cribs or submerged timber without spooking the school. Pair it with traditional sonar for classic fish arches on deeper swings, and you've got a full-spectrum tool for lakes, rivers, and coastal inlets.
Why It Stands Out in Shallow Depths
- Optimized CHIRP frequencies cut through clutter for cleaner returns under 100 feet.
- Fast-response temperature sensor tracks water column changes to predict bites.
- Rugged transom design handles rough wakes and trailered boats with ease.
- Balanced power ensures all-day performance without overwhelming smaller chartplotters.
Installation Made Simple for Weekend Warriors
No need for a marine electrician— the included hardware and step-by-step guide make transom mounting straightforward. Position it just above the hull bottom, angle for your deadrise (up to 70 degrees), and route the 30-foot cable cleanly to your Garmin display. Pro tip: Clean the mounting area thoroughly and use marine sealant for a watertight seal that lasts seasons. Test in shallow water post-install to fine-tune for bubble-free scans.
Seamless Integration with Your Garmin Setup
Designed for plug-and-play with popular Garmin fishfinders and multifunction displays, it unlocks full scanning potential on units ready for advanced sonar. Expect split-screen views showing traditional, DownVü, and SideVü simultaneously, so you never miss a thing while trolling or casting.
Detailed Performance Specs
| Category | Details |
|---|---|
| Frequency - Traditional | 77/200 kHz |
| Frequency - DownVü/SideVü CHIRP | 455 kHz (425-485 kHz) & 800 kHz (790-850 kHz) |
| Power - Traditional | 500 W |
| Power - DownVü/SideVü | 500 W per element (1,500 W total) |
| Beamwidth - Traditional | 45°/15° |
| Beamwidth - DownVü/SideVü | 1.1° x 53° @ 455 kHz; 0.7° x 30° @ 800 kHz |
| Max Depth - Traditional | 1,900 ft freshwater / 900 ft saltwater |
| Max Depth - DownVü | 750 ft |
| Max Depth - SideVü | 500 ft |
| Sensors | Depth & Temperature |
| Connector | 12-pin |
| Cable Length | 30 ft |
| Transom Angle | 0°-70° |
Everything You Need to Get Started
- GT40-TM 12-pin transducer
- Complete mounting hardware kit
- Detailed installation instructions
Frequently Asked Questions
What makes the Garmin GT40-TM ideal for shallow water fishing?
Its CHIRP DownVü and SideVü at 455/800 kHz deliver exceptional clarity in depths under 100 feet, perfect for spotting fish near bottom structure without the noise of deeper-water transducers.
Does the GT40-TM include a temperature sensor?
Yes, it features a built-in fast-response temperature sensor to monitor water conditions in real-time, helping anglers adjust tactics as layers shift.
How far can SideVü scan from the boat?
SideVü reaches up to 500 feet per side, allowing you to map extensive structure while underway or at anchor.
Is installation DIY-friendly for this transom mount?
Absolutely— with included hardware and instructions, most boat owners complete the job in under an hour, supporting deadrise angles from 0° to 70°.
What's the cable length on the GT40-TM?
It comes with a 30-foot cable, giving plenty of reach for console or multi-station boats.
Can this transducer handle saltwater use?
Yes, its traditional sonar rates for 900 feet in saltwater, making it reliable for inshore bays and estuaries alongside freshwater prowess.
How does the beamwidth compare for different modes?
Traditional offers wide coverage at 45°/15°, while DownVü/SideVü provides narrow, detailed beams: 1.1° x 53° at 455 kHz and 0.7° x 30° at 800 kHz.
This transom mount transducer provides ultra-clear sonar pictures of objects, structure and fish that pass below your boat. This traditional and CHIRP DownVü/SideVü transducer is optimized for clearer images at shallower depths.
The CHIRP DownVü/SideVü elements have a power rating of 500 W per element (1,500 W total) and operating frequencies of 455/800 kHz. The traditional sonar has a power rating of 500 W and operating frequencies of 77/200 kHz. It also includes a built-in fast response temperature sensor.
GT40-TM icludes a 12-pin transducer with mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.
Compatible Devices:
- echoMAP™ 73sv
- GPSMAP® 7607xsv
- GPSMAP® 7608xsv
- GPSMAP® 7610xsv
- GPSMAP® 7612xsv
- GSD™ 25 Premium Sonar Module
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Frequently Asked Questions (FAQ) About Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp
Who is the Garmin?How to describe Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
How many pins exists in the connector of the product?
What's the Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp package dimensions and weight?
Speed feature included to the product?
How to mount or what is the mounting style of Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
This product can read the temprature?
What is the length of cable (feet)?
What is the imagining type of the product?
Is this product supporting CHIRP and what's the type?
What is the manufacturer notes about Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
Who is the Garmin?
How to describe Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
Perfect for the shallow water fisherman who want traditional sonar, CHIRP ClearVü and CHIRP SideVü scanning sonar, this transom mounted transducer consistently displays fish arches as well as clear pictures of objects, structure and fish that pass below and to each side of your boat.
The CHIRP ClearVü/SideVü elements have a power rating of 500 W per element (1,500 W total) and operating frequencies of 455/800 kHz. The traditional sonar has a power rating of 500 W and operating frequencies of 77/200 kHz. It also includes a built-in fast response temperature sensor.
GT40-TM includes a 12-pin transducer with mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.
How many pins exists in the connector of the product?
What's the Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp package dimensions and weight?
Speed feature included to the product?
How to mount or what is the mounting style of Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
This product can read the temprature?
What is the length of cable (feet)?
What is the imagining type of the product?
Is this product supporting CHIRP and what's the type?
What is the manufacturer notes about Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp?
Perfect for the shallow water fisherman who want traditional sonar, CHIRP ClearVü and CHIRP SideVü scanning sonar, this transom mounted transducer consistently displays fish arches as well as clear pictures of objects, structure and fish that pass below and to each side of your boat.
The CHIRP ClearVü/SideVü elements have a power rating of 500 W per element (1,500 W total) and operating frequencies of 455/800 kHz. The traditional sonar has a power rating of 500 W and operating frequencies of 77/200 kHz. It also includes a built-in fast response temperature sensor.
GT40-TM includes a 12-pin transducer with mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.
Save $33 when you buy the Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp for only $216 from NVN Marine! Same day shipping before 3pm.
Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Garmin |
| Weight: |
2.8 lb |
| Temperature: |
Yes |
| Speed Included: |
No |
| Mounting Style: |
Transom |
| Imagining: |
Standard/Down/Side |
| Cable Length (Feet): |
30' |
| Pins: |
12 |
| Chirp: |
Non Traditional |
| Product Installation: |
Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp User Reviews
Garmin GT40-TM - TM DownVü/SideVü 500W(CHIRP 455/800 kHz) Traditional 500W(77/200 kHz) Ducer w/Temp Shipping & Return
| Shipping Weight: |
2.8 lb |
|---|---|
| Box Sizes: |
5.00 (h) x 6.00 (w) x 12.00 (l) |
| Cubic Feet: |
360.0 |
| Returnable: |
Yes |
| P65: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.