Whats the output and thermal limit?

Output is ambient available heat+watts of power draw, approx 3btus per watt. Upper limit is 180° before you start to do permanent damage. Lower is-80 going below -80 even with the unit off is reported by some people to permanently damage. If they get too hot they permanently lose capacity, if they get too cold I've had them split. Although these particular ones I have been using to heat, from a high ambient so really what's the lower limit about 15°F below the temperature of the fluid you are removing heat from. Move heat from air to water you can predictably get ≤30°∆T.

Can this device produce cold temp

It moves heat out. It only makes something cooler. I mean technically it can but you have to keep the heat from running right back in.

What would be the output power (in W) for a temperature difference of about 10 degC? What would be the optimum voltage at that point?

I can't tell you the output offhand, but it's not worth buying for only a 10 degree differential usage, at it won't really put that much out. Running a small pc fan on low-med RPM at best.

What is the maximum temperature this device can tolerate?

Dear, It can tolerate 200℃ (392℉)

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TEG1-241-1.4-1.2 High Efficiency Semiconductor Thermoelectric Generator Hot Surface Temperature 200 Degree

TEG1-241-1.4-1.2 High Efficiency Semiconductor Thermoelectric Generator Hot Surface Temperature 200 Degree

Product ID: 663761301

Details

Brand
Bolsen
Fuel type
Thermal
Included components
Instructions
Item weight
0.04 Kilograms
Output wattage
10 Watts
Power source

⚡10W max power output

📏Compact 40x40x4.2mm size

🌡️Operates up to 200°C hot surface

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Description

⚡ Harness heat, power your future — don’t get left in the cold!

PLUG PLAY READY - Includes protective cover and manuals, making integration into commercial or residential setups effortless.
COMPACT PORTABLE - Slim 40x40x4.2mm footprint fits seamlessly into any design without bulk.
POWER YOUR INNOVATION - Delivers a robust 10 watts of clean thermoelectric energy, perfect for cutting-edge projects.
HEAT RESISTANT PERFORMANCE - Engineered to sustain hot surfaces up to 200°C, ensuring reliable operation in demanding environments.
OPTIMIZED ELECTRICAL OUTPUT - Generates 11.1V open circuit voltage with a matched load current of 1.8A for efficient power conversion.

The TEG1-241-1.4-1.2 is a high-efficiency single-layer semiconductor thermoelectric generator designed to convert thermal energy from hot surfaces up to 200°C into electrical power. Compact at 40x40x4.2mm, it delivers up to 10 watts of output power with an open circuit voltage of 11.1 volts and a current of 1.8 amps, making it ideal for innovative commercial and residential energy solutions.

Specifications

ASIN	B07FTH4RFN
Best Sellers Rank	273,873 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 747 in Computer Heatsinks
Brand Name	Bolsen
Current Rating	1.8 Amps
Engine Power Maximum	10 Watts
Engine Type	4 Stroke
Frequency	60 Hz
Fuel Type	Thermal
Ignition System Type	Electronic
Included Components	Instructions manuals, Protective cover
Item Dimensions L x W x H	4H millimetres
Item Weight	0.04 Kilograms
Manufacturer	Bolsen
Material Type	copper
Model Name	Bolsen TGM
Model Number	TEG1-287-1.4-1.5
Output Wattage	10 Watts
Power Source	Thermoelectric
Recommended Uses For Product	Commercial, Residential
Running Wattage	10 Watts
Special Features	Portable
Starting Wattage	10 Watts
Total Power Outlets	1
Voltage	15 Volts
Wattage	10 watts

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