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Like most other microwaves, the SMH9187 cycles the magnetron on and off as needed to accomplish lower-than-100% power level settings. Thank you for your interest, Ms. Samsung
Sorry, there was a problem. Please try again later.The magnetron (unit that produces microwaves) only has two settings: on and off. At anything less than 100% power, it cycles on and off for a cumulative effect. So for example, if you put in on 50% power for one minute, the unit will cycle on and off every few seconds for a total of 30 seconds during that minute, or 50% of the time. This is effective and all microwaves work this way.
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