Features:

  • Working voltage: DC 2.7-12V.
  • AM312 Human Sensing Module: Based on passive body infrared technology digital intelligent automatic control products, high sensitivity, reliability, widely used in various types of automatic induction electrical equipment.
  • Low power consumption and small size for easy embedded installation.
  • Sensing range: ≤100 degree cone angle, 3-5 meters; (depending on the specific lens)
Easy and Consistent

These are tiny and don't require any adjustments to use. All of them worked perfectly for me. The range is probably 10-15 feet. They do need a 'warm-up' period before they start giving consistent readings. As soon as they're turned on, it runs for 2 seconds, but it usually takes about a minute before the readings are consistent. I use these with 3 volt logic micro-controller. Definitely recommend.

great functionality in a small package

These r great little motion sensors. Inexpensive and easy to apply. Using them to sense the presence of my cat wanting to go outside thru a little door. They trigger a motor driving a lead screw connected to the door which opens n closes it.

Works very well

The 3 HiLetgo 3pcs AM312 Mini sensors are small, sensitive and work well as a DIY motion sensor. I add lights and sound to keep the bear out of the garbage. All I need now is to wait for the bears to wake up and see if it scares them off. Great for DIY projects or repair.

Good for repair as well as experimenting

I've used this product to repair a LED battery closet light with a defective PIR sensor.

RUNNING FIRST TEST DEVICE

Easy to hook up great design, size is perfect found specification online easy to write code for ESP8266 in Arduino IDE

Works as advertized

I found no issues, works as advertised. Thanks.

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