Our take
R-410LK is a black 1.4-cu.-ft. Sharp with 1,100-W output, a 14-1/8-in. tray and a separate optional 24-in. kit.
A conventional countertop choice when the 1.4-cu.-ft. cavity, larger tray and optional trim route fit your plan..
Choose a documented sensor model if sensor cooking is essential, or another finish if black does not suit your kitchen.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The manual documents 1.4 cu. ft., 1,100-W output, 120 V / 60 Hz and a 14-1/8-in. tray.
- The black R-410LK has a named optional RK-40K24 kit for a 24-in. opening.
- Cook, reheat, defrost, popcorn, Minute Plus and timer controls are listed.
What to weigh up
- Manual prose and the settings table disagree on the total automatic-setting count.
- Sensor cooking is not identified in the exact model material.
- The historical Amazon ASIN failed and is not linked directly.
The key details
| Model covered | R-410LK |
|---|---|
| Capacity | Stated oven capacity is 1.4 cu. ft. |
| Microwave output | Sharp lists 1,100-W output separately from 1,600-W consumption. |
| Cooking approach | Six cook, six reheat and four defrost choices are described; total setting count conflicts. |
| Installation options | Countertop use, 120-V/60-Hz supply and optional RK-40K24 24-in. kit are documented. |
| Finish and turntable | Black R-410LK with a 14-1/8-in. turntable. |
Performance figures are manufacturer claims. Source checked October 11, 2026. Regional models and included accessories can differ.
What the features mean for you
What fits in the 1.4-cu.-ft. cavity?
Sharp gives a 1.4-cu.-ft. capacity and a 14-1/8-in. turntable, placing this model above compact 0.7- and 0.9-cu.-ft. ovens. The tray is a practical check for round plates, though a dish still needs clearance to rotate. Measure the base and height of cookware you use often; volume alone does not establish whether a rectangular casserole or tall container fits through the opening.
How do output and electrical draw differ?
The manual lists 1,100 W of microwave output and 1.6 kW with a 13.5-A line requirement. Output is the cooking-power field used for the matching preference; input and amperage help plan the electrical connection. Do not compare the two wattage figures as though they measure the same thing. Sharp specifies a 120-V single-phase, 60-Hz supply, but verify the circuit and nameplate for the exact installation.
Which shortcuts are actually documented?
Sharp describes six automatic cook choices, six reheat choices, four defrost choices, a popcorn key, Minute Plus, clock and timer. The manual's descriptive text sums to 16 options, but its settings table reports 23, so no grand total is used here. Sensor cooking is not named in the reviewed exact sources. These presets provide fixed shortcuts, but they should not be treated as moisture sensing or a measured cooking result.
What does the optional kit require?
Sharp lists the RK-40K24 optional kit for the black R-410LK with a 24-in. opening. The kit is separate; the oven remains a countertop model without it, and the manual does not say it is included. Check the exact opening and accessory instructions before planning built-in placement. The white R-410LW uses a different RK-40W24 code, so do not substitute parts based only on the shared family name.
Why keep the LK suffix?
The manual identifies R-410LK as black and R-410LW as white. The suffix therefore distinguishes exact finish variants and their trim-kit options. The frozen row's Bunn brand field conflicts with the model-specific Sharp documentation; the product record follows the exact Sharp code. The historical Amazon page returned an error, so use the tagged exact-model search and confirm R-410LK on the current item.
Who should choose this over a sensor alternative?
R-410LK fits a buyer who wants a mid-size cavity, a documented larger tray and a separate built-in option. Its control list is detailed but does not establish sensor cooking. A model with a sensor label may be preferable when that feature matters more than the optional kit; a smaller oven may fit a tight counter better. No firsthand performance, reliability or cleaning result is claimed.
What else to compare
Compare a model with confirmed Sensor Cook for moisture-sensing guidance, or the white R-410LW only if its finish and separate kit fit.
Before you buy
What output and input are listed?
Sharp lists 1,100-W microwave output and 1.6-kW, 13.5-A electrical requirements.
Which kit is documented?
The manual names optional kit RK-40K24 for the black model's 24-in. opening.
How many automatic settings are there?
The manual's descriptive text and table conflict, so a single total is withheld.
Is the historical Amazon ASIN exact?
It was not verified; use the tagged R-410LK model search.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Sharp-authored R-410LK/R-410LW manual transcription ↗ — checked October 11, 2026.
- Sharp-authored family manual; model finish, output, capacity, supply, controls, tray and optional kit. ↗ — checked October 11, 2026.
- Sharp service manual separates 1,100-W output and 1,600-W consumption. ↗ — checked October 11, 2026.
- Exact-model retailer record identifies black R-410LK countertop model. ↗ — checked October 5, 2026.
The decision
R-410LK offers 1.4 cu. ft., 1,100-W output, a 14-1/8-in. tray and an optional 24-in. kit; sensor status and menu total remain unresolved.
Is it the right fit?
Check the exact model and today’s offers on Amazon.