Humminbird Transom Temperature Transducer for HELIX with Dual Spectrum CHIRP Sonar – XNT 9 HW T
Quick take
The Humminbird XNT 9 HW T is a transom-mount Dual Spectrum CHIRP transducer with an integrated temperature sensor, made for compatible HELIX G2, G3, and G4 fish finder units. It focuses on 2D CHIRP performance (150–220 kHz) with a wide cone angle and a max depth rating of 1,200 feet. The main caveat is that it provides 2D sonar only, so it is not a standalone source for Side Imaging or Down Imaging.
Pros and cons
Pros
- Dual Spectrum CHIRP 2D support (150–220 kHz) for high-frequency sonar detail and a wide cone angle
- Built-in temperature sensor with a 20-foot cable for cleaner installation planning
- Designed as a transom-mount solution with included mounting hardware and instructions
- Compatible with a wide range of GPS-equipped HELIX G2, G3, and G4 models (helps when upgrading or replacing a failed transducer)
Cons
- 2D sonar only, so imaging modes like Side Imaging or Down Imaging require compatible add-on transducer support
- Best results depend on HELIX model compatibility, so double-check fit before buying
What buyers think
Buyer-review evidence for the XNT 9 HW T points to generally smooth ownership experiences, with themes centered on installation ease and reliable day-to-day performance. Several buyers describe it as a solid replacement when swapping out a broken or missing transducer, and others note that it performs well even at higher speeds. One recurring practical note is that mounting hardware or the bracket screw pattern may differ versus older units, which can mean you may need to pay closer attention during installation if you are retrofitting.
What this transducer is, and who it’s for
This is a transom temperature transducer built to work as a 2D sonar source for compatible Humminbird HELIX fish finders. If you already own a HELIX unit and want to add temperature readings plus CHIRP 2D sonar, the XNT 9 HW T is a straightforward way to complete that setup.
It is especially relevant if you:
- Need a replacement transducer for an existing HELIX installation
- Want temperature data alongside your sonar
- Prefer a CHIRP 2D transducer with Dual Spectrum operation (high-frequency detail within 150–220 kHz)
Key features that affect real fishing use
Dual Spectrum CHIRP 2D (150–220 kHz)
The transducer is tuned for Dual Spectrum CHIRP 2D sonar, covering 150–220 kHz. In practice, that combination is intended to support a tighter, high-frequency style of sonar detail while still providing a wide cone angle for broader area coverage under the boat.
Max depth rating: 1,200 feet
The unit is rated for a maximum measuring depth of 1,200 feet. Even if you rarely fish at extreme depths, a higher depth rating can matter in deeper water or when you want more headroom for reading the bottom and structure.
Built-in temperature sensor
It includes an integrated temperature sensor, which can be important for reading water conditions and understanding how temperature changes can affect fish behavior. The package includes a 20-foot cable, which helps with routing depending on your boat layout.
2D sonar only: the compatibility and feature tradeoff
A key buying caveat is that this transducer is 2D sonar only. If your goal is to use features associated with imaging modes like Side Imaging or Down Imaging, you will need the appropriate imaging setup for your HELIX system. This model is still valuable when you mainly want consistent CHIRP 2D performance plus temperature.
Installation and fit considerations
As a transom-mount transducer, installation typically focuses on positioning and cable routing on the boat’s transom. Buyers who replaced an older unit report that installation is generally straightforward, but there can be differences in mounting bracket screw patterns versus what you removed. If you are retrofitting, it is worth planning for minor hardware alignment changes rather than assuming a perfect plug-and-play swap.
Pros and cons recap
- Best for: HELIX owners who want CHIRP 2D sonar and built-in temperature, or those replacing a transom transducer on a compatible G2, G3, or G4 setup.
- Buy if you value: Dual Spectrum CHIRP 2D (150–220 kHz), wide cone-angle coverage, and integrated temperature readings.
- Avoid or reconsider if: you specifically need Side Imaging or Down Imaging from this transducer alone, or you are unsure your HELIX model is compatible.
Price and availability
Pricing can vary by retailer and time of year, but this model sits in the upper end of the “replacement transducer” category given its CHIRP feature set and temperature integration. Check the latest cost and shipping details before committing.
FAQ
What HELIX models are compatible with this transducer?
It is intended for compatible GPS-equipped HELIX models across the G2, G3, and G4
Does the XNT 9 HW t provide side imaging or down imaging?
No. It is designed as a 2D sonar only transducer, so imaging modes are not the focus of this unit.
Does it include a temperature sensor?
Yes. The transducer includes a built-in temperature sensor.
What sonar frequency range does it use?
It supports Dual Spectrum CHIRP 2D sonar in the 150–220 kHz range.
What is the cable length?
The transducer includes a 20-foot cable.
Is it a good option if I am replacing a broken transducer?
It is commonly purchased for replacement purposes, and buyers typically find installation manageable. If your previous transducer used a different bracket or screw pattern, you may need to pay attention during mounting.
Specifications
| Product Title | Humminbird Transom Temperature Transducer for HELIX with Dual Spectrum CHIRP Sonar – XNT 9 HW T |
|---|---|
| Category | Electronics > Car & Vehicle Electronics > Marine Electronics > Fish Finders & Depth Finders |
| Brand | Humminbird |
| Manufacturer | Humminbird |
| Model Name | Transom Mount Transducer |
| Model Number | 710274-1 |
| Item Weight | 1 Pounds |
| Product Dimensions | 8.63"L x 7.38"W x 3.63"H |
| Display | LCD |
| Maximum Measuring Depth | 1200 Feet |
| Mounting Type | Transom Mount |
| Item Dimensions L x W x H | 8.63"L x 7.38"W x 3.63"H |
| Brand Name | Humminbird |
| UPC | 082324053061 |
| Global Trade Identification Number | 00082324053061 |
| Manufacturer Part Number | 710274-1 |
| Included Components | Transom mount transducer (includes built-in Temperature) with 20 ft cable length; Mounting hardware; Installation instructions |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year Manufacturer |
| Item Type Name | Fish Finder Transducer Accessory |
| Display Type | LCD |
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