Can you turn off the backlit LCD display?

Of course you can. You can turn it on permanently or off if you prefer. There are also three settings available for the brightness.

What is the temperature buffer in regular operating mode - how far does the temp have to go up or down before the fan comes on or shuts off?

An additional note on this, AFAICT there is no temperature buffer in smart mode, it only applies in auto mode. In smart mode the fan just toggles on and off continuously as the temperature hovers around the set point, making that mode kinda useless. Reported as a bug to AC Infinity...

Does the fan have auto mode to turn on automatically based on temperature?

It is not the fan that have an auto mode, it is the AC Infinity Controller. I leave mine on Smart program all the time so when the temperature rise up the fans start to extract the heat gradually and silently. The warmer the receiver the faster they go until the temperature comes down again ( according to your program ) and then the system turns off automatically. This is a fantastic product and seeing how hot the receivers can get I can only highly recommend AC Infinity. Before my receiver could heat up to 42 degree celsius, now the temperature never goes above 30 degree celsius. Hope that helps.

What is the highest temperature you can set the fans to come on at?

Nvm...It looks like they've updated to a newer model than what I have. They claim the new model is: 32 to 140*F

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Thermostat and Speed Controller USB Fan for AV Cabinet Cooling

Product ID: 257774380

Details

Brand
AC Infinity
Colour
Black / Black
Material
Plastic
Product dimensions
13.2L x 7.9W x
Voltage
5 Volts

🔌USB powered, no batteries needed

🤫Whisper-quiet operation

🌡️Precise digital temp control

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VT28582

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Description

🌬️ Stay cool, stay ahead — the ultimate AV cabinet guardian!

TRUSTED BY PROS - Top-rated with 4.7 stars and thousands of users optimizing their tech setups.
SILENT YET POWERFUL - Keep your workspace noise-free with whisper-quiet fan speed adjustments.
COMPACT DURABLE DESIGN - Sleek, space-saving build crafted from premium materials for long-lasting use.
PLUG PLAY USB CONVENIENCE - Easy USB power setup—no batteries, no hassle, just instant cooling.
SMART TEMPERATURE REGULATION - Maintain optimal AV cabinet temps effortlessly with precise digital control.

The AC Infinity Thermostat and Speed Controller USB Fan is a compact, durable cooling solution designed for AV cabinets and PC units. Featuring precise digital temperature control and whisper-quiet operation, it runs multiple fans efficiently via USB power without batteries. Highly rated by users, it ensures optimal device performance and longevity in a sleek, easy-to-install package.

Specifications

ASIN	B00NG9TSG4
Best Sellers Rank	#49,274 in Computers ( See Top 100 in Computers ) #114 in USB Fans
Brand Name	AC Infinity
Color	Black / Black
Customer Reviews	4.7 4.7 out of 5 stars (905)
Display Type	Digital
Item Dimensions L x W x H	13.2L x 7.9W x 2.8H centimeters
Item Weight	181 g
Manufacturer	AC Infinity
Material Type	Plastic
Model	AI-ATC
Operating Temperature	32 Degrees Fahrenheit
Part Number	AI-ATC
UPC	854759004402
Unit Count	1.0 Count
Voltage	5 Volts

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VT28582

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