Mini PIR Motion Sensor AM312, 2.7V-12V

Marsoni

M251S

$69.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Mini PIR Motion Sensor AM312, 2.7V-12VThis motion sensor is a mini version of the standard PIR sensor. This type of sensor can be used to detect movement by means of infrared light. PIR sensors are used to sense the movement of people, animals, or other objects. They are commonly used in burglar alarms and automatically activated lighting systems. They are commonly called simply "PIR", or sometimes "PID", for "passive infrared detector". These sensors can be used with microcontroller

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Honestly - I found this to be of equal quality to the well known brand necklace of the same type (birthstone and initial) that I also bought - and this one cost less. It looks lovely. It made a great gift for my niece. The chain is quite delicate - but most of them are, these days. I definitely recommend for the younger ones in your life - teens on down. It was a big hit.

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Reviewed in the United States on December 27, 2025

Verified Purchase

Cheryl Schmitt

Port Orchard, US

★★★★★ 5

Birthstone necklace

Color: 03-Mar-Lab Grown Aquamarine, Style: A.

Reasonable price. Beautiful style. I have purchased several for my young granddaughters and daughter. They love the necklace.

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Reviewed in the United States on April 24, 2026

Verified Purchase

Tom G.

Bozeman, US

★★★★★ 5

Very pretty necklace. 13yo loves it!

Color: 02-Feb-Lab Grown Amethyst, Style: A., Color: 02-Feb-Lab Grown Amethyst, Style: A.

Bought these for our nieces birthday and she loves the necklace! It has very nice color and looks beautiful. It’s fits her perfectly and seems well made. Very happy with the purchase.

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Reviewed in the United States on February 22, 2026