Model reference
Finnex STE-400 digital titanium aquarium heater
Model: STE-400 / 400 W
This entry concerns Finnex’s distinct STE-400 option in the US Shop selector (SKU STE-400, UPC 850006562428). Its model and series material identify features and a capacity band, but the full supply voltage/frequency and the exact unit’s immersion and installation directions remain unverified. It is a model reference, not confirmation of a current seller, package, or questionnaire fit.
This model lookup is separate from the questionnaire shortlist. It does not certify that this model meets your selected requirements.
Finnex lists the STE-400 as a 400 W digital titanium heater for 80–100 US gallons, with a 3.33 A specification and a claimed adjustable 68–92°F range. The 80-gallon minimum matters as much as the 100-gallon ceiling; neither band nor a controller claim guarantees a tank-specific heating result.
Search this model on Amazon ↗Search results may include other models. Confirm the exact model, applicable region, condition and included parts before ordering.
As an Amazon Associate I earn from qualifying purchases.
Read the detailed model assessment · Find products for my needs
Documented model details
- Finnex’s US Shop variant data identifies a separate STE-400 option with its own SKU, UPC and 400 W rating; STE-200, STE-600 and STE-800 are separate wattage configurations.
- The STE-400 row in Finnex’s series specification graphic lists 3.33 A, 68–92°F and 80–100 US gallons. The graphic gives no voltage basis for that amperage; it also lists a six-foot cord for the series.
- Finnex describes digital push-button adjustment, a remote temperature sensor, titanium construction and freshwater/marine use. Its series chart adds a nickel coil, ETL listing to UL standards and a non-resumable out-of-water fuse; these are manufacturer statements, not independent reliability or accuracy tests.
Limits to weigh
- The maker’s 80-gallon lower endpoint cannot be enforced by this site’s maximum-only finder. The STE-400 is therefore excluded from recommendation results even for tanks inside its listed band.
- The 80–100 US-gallon band is a published selection range, not a promise that the heater will reach a target temperature under every room, circulation or tank condition.
- Although Finnex lists 3.33 A, the reviewed STE-400 model graphic does not state its voltage basis. Exact unit voltage and frequency remain unknown.
- The reviewed Finnex instructions index did not expose a STE manual. Minimum immersion, orientation, clearance and dry-operation permission remain unestablished; do not infer them from a photograph or sibling model.
- Finnex’s ±1°F accuracy and protection descriptions are manufacturer claims, not measurements or independent safety testing.
- The retained manufacturer selector and retailer photograph do not establish current third-party stock, the seller, or the contents of a present-day offer.
Check before ordering
- Check the model and wattage on the actual carton or unit: STE-400 / 400 W, not the STE-200, STE-600 or STE-800 sibling.
- Read the actual unit’s electrical nameplate and supplied directions; the 3.33 A listing does not state voltage or frequency.
- Treat Finnex’s 80–100 US-gallon band as two-sided. Do not choose the STE-400 solely because an aquarium falls below the stated 100-gallon maximum.
- Confirm the actual offer and included parts rather than assuming the photographed heater, controller, sensor or guard are all in a seller’s package.
- Follow the exact supplied STE installation instructions for immersion, orientation and clearances. The reviewed sources do not settle those conditions.
- After setup, verify aquarium water independently; a one-degree setting step and ±1°F statement do not establish actual tank temperature.
