A Bed-Stuy synagogue has been blasting a siren type sound every Friday to signal the beginning of Shabbat – and neighbors say their ears can’t take it anymore.

Robert Prichard lives about 100 feet from the Congretation Bais Yaakov Nechemia D’satmar at 144 Spencer St. and said he has to wear earmuffs he bought from a gun store at the hour the alarm is sounded.

“It’s a war air-raid siren,” the 60-year-old told The Post. “It’s got a sound to elicit flight or fight, kind of (like) a razor saw, high end grating.”

Prichard said the synagogue installed the new, blasting alarm this summer after building an additional wing to accommodate more people.

Sirens are common in neighborhoods with large ultra-Orthodox Jewish populations, which signal the minute day light ends and Shabbos begins, but residents say this one is far louder than usual.

“It’s so loud, it takes your breath away,” said Aaron Graubart, 48, a food photographer who said he complained to the DEP and a worker came out to measure the decibels from his apartment.

He said it registered 106 – which is close to a chain saw – from his window.

Graubart shot a video of the siren and posted it to YouTube.

“It’s not like church bells or the Muslim call to prayer,” he said. ‘I work from home and can’t have clients come on Fridays.”

The synagogue did not return calls from The Post Wednesday.