Our take
The Sharp R830BS pairs 900-W microwave output with a separate 1,600-W convection heater in a 0.9-cu.-ft. countertop appliance. It suits a buyer who will use both cooking approaches and can work within a smaller cavity; the sheet does not support sensor cooking.
Choose it when counter space is limited and you specifically want both microwave heating and convection baking or roasting. Choose a larger sensor model if cavity volume or sensor automation matters more..
Skip it if you need sensor-guided cooking, a larger cavity for broad cookware, or an approved built-in trim-kit installation. Its exact commercial-duty classification is also unresolved.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Microwave and convection functions provide two documented cooking approaches in one countertop appliance.
- The removable 12.75-in. turntable and 10 microwave power levels are specified by Sharp.
- Sharp documents a 100–450°F convection range and separate upper and lower heating elements.
What to weigh up
- The 0.9-cu.-ft. cavity is modest, and Sharp says actual food-holding space is less than the calculated volume.
- Sharp's sheet lists no sensor cooking, so one-touch controls should not be mistaken for sensor automation.
- No trim kit is listed, and the historical Amazon ASIN has not been matched to a current exact offer.
The key details
| Model covered | R830BS |
|---|---|
| Capacity | Capacity: 0.9 cu. ft.; Sharp cautions that usable food space is smaller than the calculated cavity volume |
| Microwave output | Microwave output: 900 W; the separate convection heating output is 1,600 W |
| Cooking approach | Cooking approach: microwave plus convection roasting and baking; no sensor cooking is listed on Sharp's sheet |
| Installation options | Installation options: countertop use; Sharp lists no trim kit, and the exact commercial-duty classification remains unknown |
| Finish and turntable | Finish and turntable: black cabinet, stainless interior, black door with stainless trim, removable 12.75-in. tray |
Performance figures are manufacturer claims. Source checked October 10, 2026. Regional models and included accessories can differ.
What the features mean for you
Keep the exact R830BS identity and finish together
Sharp's product sheet names R830BS and separates three visible surfaces: a black cabinet, stainless-steel interior and a black door with stainless trim. That combination is more precise than calling the entire appliance stainless. The historical row used a generic stainless description, but the model-specific sheet is the more useful guide for checking a seller's photographs and listing. Search the full R830BS code and confirm the finish details on the item offered; do not assume a similar Sharp R-series code or a replacement model shares this combination.
Use convection only if it changes your routine
This model has a microwave mode and a separate convection mode for roasting and baking, with a documented 100–450°F setting range and 1,600-W heater output. That lets a buyer consider it for recipes that call for browning or oven-style heat as well as ordinary reheating. The 900-W figure is microwave output; it is not the convection heater rating or the appliance's electrical draw. If you mostly reheat drinks and leftovers, a simpler microwave may be a more direct fit. The documents do not prove a measured speed or cooking result.
Measure dishes against the tray and usable cavity
Sharp specifies a removable 12.75-in. turntable and a 0.9-cu.-ft. nominal cavity. Its sheet warns that the capacity is calculated from maximum internal width, depth and height and that actual food-holding space is smaller. A dish must fit on the turntable and rotate without touching the walls, so the tray diameter is only a first check. Measure the outside footprint and your regular cookware before deciding whether this is a useful compact size. A buyer with wide serving pieces or larger casserole dishes should compare a larger model instead.
Distinguish sensor cooking from one-touch buttons
The Sharp sheet explicitly says sensor cooking functions and sensor reheat are absent. A retailer page also uses a sensor phrase in its feature list, but its detailed specification field says no; because that retailer content conflicts internally, the manufacturer sheet is used here. R830BS does provide ten microwave power levels, defrost options and several one-touch buttons. Those controls can still be useful for manually timed or preset jobs, but they do not document automatic sensing. Choose a sensor-equipped model if that automation is a requirement rather than a bonus.
Plan for countertop ventilation and a compatible supply
Sharp's sheet identifies 120 V and 60 Hz and lists no trim kit. The retailer listing classifies R830BS as a countertop model and also shows no optional built-in kit. Keep it on a counter with the ventilation clearances required by its manual; do not treat the convection capability as permission to place it in cabinetry. The sources reviewed do not establish an exact commercial or foodservice rating. Confirm the rating plate, circuit requirements and clearances for the specific unit before installation, especially if the location is shared or unusually constrained.
What else to compare
Before you buy
Does the R830BS have sensor cooking?
Sharp's R830BS specification sheet says sensor cooking and sensor reheat are not provided.
What are its microwave and convection outputs?
Sharp lists 900 W microwave output and a separate 1,600-W convection heating output.
Can it be installed with a trim kit?
Sharp lists no trim kit for R830BS; the reviewed sources support countertop placement.
What is the turntable diameter?
The removable porcelain-coated steel turntable measures 12.75 inches according to Sharp.
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 R830BS specification sheet ↗ — checked October 10, 2026.
- Sharp R830BS sheet, inspected 2026-10-10. It lists capacity, microwave and convection outputs, temperature range, finish, supply, tray size, trim-kit status and no sensor cooking. ↗ — checked October 10, 2026.
- Designer Appliances exact-model listing, inspected 2026-10-10 for R830BS countertop identity and dimensions. Its sensor fields conflict internally, so the Sharp sheet controls the sensor attribute. ↗ — checked October 10, 2026.
The decision
The Sharp R830BS pairs 900-W microwave output with a separate 1,600-W convection heater in a 0.9-cu.-ft. countertop appliance. It suits a buyer who will use both cooking approaches and can work within a smaller cavity; the sheet does not support sensor cooking.
Is it the right fit?
Check the exact model and today’s offers on Amazon.