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Description
SK131 High-power Ultrasonic Electronic Rat Repeller Analog Alarm Sound Intelligent Pest Killer, EU Plug, HC2881A, HC2881B, HC2881C, HC2881D, HC2881E1. Power: 3. 6W 2. Ultrasonic frequency: 16KHz 25KHz 3. Distance of infrared sensing: 10 15 meters, Ultrasonic effective range: 300 square meters. 4. You can adjust the ultrasonic frequency to target most pests, including raccoons, deer, skunks, mice, squirrels, etc. It comes with an optional predator alert, and could even scare away large predators like bears. 5. Three modes: Induction mode: Infrared induced thermal energy object (adjustable straight
1. Power: 3.6W2. Ultrasonic frequency: 16KHz-25KHz
3. Distance of infrared sensing: 10-15 meters, Ultrasonic effective range: 300 square meters.
4. You can adjust the ultrasonic frequency to target most pests, including raccoons, deer, skunks, mice, squirrels, etc. It comes with an optional predator alert, and could even scare away large predators like bears.
5. Three modes:
- Induction mode: Infrared-induced thermal energy object (adjustable straight line 1-20m) to emit ultrasonic waves (fixed frequency)
- Continuous mode: continuous ultrasonic transmission without infrared sensing
- Sweep mode: Induction mode of ultrasonic waves from low frequency to high frequency
6. Working mode: 24-hour, daytime, night
Specification:
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Based on 1706 reviews
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Product Reviews
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5
This is a great book to begin your study on all the groups ...
Format: Paperback
This book isn't just about pyramids. It talks a lot about all the different groups and waves of people who traveled to the American continent, mostly the Latin American areas. There is so much information contained therein that I intend to read this book again. This is a great book to begin your study on all the groups who traveled to Latin America.
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Reviewed in the United States on May 14, 2018
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5
Good read
Format: Kindle
Very well written, personable, and good research. Several references were made about Noah and Moses as if they were valid historical people and their related events, which most scholars agree were 'lifted' from Sumerian and Akkadian legends. Doesn't give much credit to Zechariah Sitchin, never even mentions Enlil and Enki - it's like talking about Kennedy's last trip to Dallas without mentioning the Grassy Knoll.
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Reviewed in the United States on September 28, 2015
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3
Interesting
Format: Hardcover
Great perspective and well-presented discussion. Beneficial for contemplation and developing hypotheses or questioning documented science to further discern evidence or seek new explanations. Recommend reading through a lens of correlation does not equal causation.
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Reviewed in the United States on April 8, 2026
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5
Professional and fun to read
Format: Paperback
The book is written by a professional who provides ideas and reasons about possibilities without being dogmatic.
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Reviewed in the United States on February 20, 2022
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4
Absolutely Not Nonsense
Format: Hardcover
At first glance, this book might be mistaken for "Chariots of the Gods" hokum -- it's about pyramids, it suggest prehistoric connections between widely scattered civilizations, and it has an entire chapter on planetary catastrophes. However, this is a very serious effort. Granted, it raises a lot more questions than it answers, and can be a little monotonous in spots. But as a former geology major, I didn't spot any pseudo-science (which is not surprising, given that the primary author has a Ph.D. in Geology from Yale) and I found much food for thought.
Sure, if it turns out that the whole theory of cultural diffusion is wrong, (similarities in disparate civilizations are due to migration and interconnection rather than parallel developoment) this book will be little more than an amusing footnote in the history of science. But then, plate tectonics was once a crackpot theory. This is a serious book that deserves to be read.
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Reviewed in the United States on December 6, 2003
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