I want to use this as a freeze warning for my garage. Would like it to go off if it gets below like 42 degrees. Would this work?

Yes this would work for your needs

Does the Max min setting measure the highest/lowest temp during a set period of time? If so what is that time? 24 hours?

It measures the max/min temperature since you last reset it.

Must I drill a hole in my freezer to use this item?

I routed the cord in back and underneath and ran it up thru the freezer drain hole .

The definition of out probe and in probe are vague. if i'm using this in the freezer is the in probe?= freezer & out probe? room temp?

We have our control display on the outside of the refrigerator. The wired probe sensor is inside the refrigerator compartment and corresponds to the "out" setting. The "in" sensor and setting is within the display so in our case reads the room temp at the outside door. Hope that helps.

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Description

❄️ Keep your cool with precision and peace of mind!

LIGHTNING FAST RESPONSE - 500 milliseconds response time means no lag in monitoring your freezer or fridge conditions.
SEAMLESS BLUETOOTH SYNC - Monitor your appliance’s temperature remotely via Bluetooth—because convenience is king.
COMPACT DURABLE DESIGN - Sleek, lightweight plastic casing fits anywhere and withstands freezer conditions effortlessly.
INSTANT TEMPERATURE ALERTS - Stay ahead with a sharp alarm that notifies you the moment temps stray from safe zones.
ENERGY EFFICIENT RECHARGEABLE - Powered by a single AAA battery with rechargeable capability—eco-friendly and cost-effective.

The Brannan Digital Freezer/Fridge Thermometer combines ultra-fast 500ms response time with Bluetooth connectivity and a built-in alarm to ensure your food stays perfectly chilled. Compact, freezer-safe, and rechargeable, it’s designed for modern professionals who demand reliable, real-time temperature monitoring with effortless remote access.

Specifications

Brand	Brannan
Special Feature	Alarm
Age Range (Description)	Adult
Outer Material	Plastic
Specification Met	CE
Display Type	Digital
Connectivity Technology	Bluetooth
Product Care Instructions	Freezer Safe, Wipe Clean
Net Quantity	1.0 count
Power Source	बटरी सचालित
Model Name	22/420/3
Number of Batteries	1 AAA batteries required.
Response Time	500 Milliseconds
Reusability	Rechargeable
Style	Digital
Indoor/Outdoor Usage	Indoor
Manufacturer	Brannan
Country of Origin	USA
Model number	22/420/3
Item Weight	9.07 g
Product Dimensions	6.5 x 2.51 x 0.51 cm; 9.07 g
Batteries	1 AAA batteries required.
Item model number	22/420/3
Item Height	0.51 Centimeters
Item Width	2.51 Centimeters
Are batteries included?	No

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