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Square white ceramic plate 40mm across with red and black wires

Unique-Bargains

Unique-Bargains TEC1-12703 12V 18W 40mm thermoelectric cooler

SKU CH-TTZC-RNBRY MPN TEC1-12703

A 40 mm square thermoelectric cooler delivers 18 W of cooling at 12 V and includes a 29 cm power cord

  • Cools or heats by reversing polarity on the 12V supply
  • Delivers 18W maximum cooling power at 3A current draw
  • Compact 40mm x 40mm x 4.2mm ceramic module fits tight spaces
  • Operates reliably from -55°C up to 83°C ambient temperature
  • Includes 29cm power leads for direct connection to 12V source

Thermoelectric cooler for 12 V systems

This Peltier module operates at 12 V and moves up to 18 W of heat. It measures 40 mm by 40 mm by 4.2 mm and includes a 29 cm power cord. The device can cool or heat depending on current polarity.

Who this suits and who should look elsewhere

Suits hobbyists and engineers building custom cooling or heating projects such as beverage chillers, small enclosures or experimental setups. Not for buyers who need a ready-to-use cooler with an integrated heat sink and fan. Not for applications that require temperature control circuitry or a sealed waterproof package.

Critical specification for fit

The module’s maximum cooling power is rated at 18 W at 12 V with a 3 A current limit. The hot side must be attached to a suitable heat sink at all times to prevent damage. Operating temperature range spans from -55 °C to 83 °C.

How it compares

Measured against everything we stock in Timer Switches & Smart Plugs, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 91% of the 173 comparable items (median $25.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

Which voltage version of the TEC1-12703 should I choose for a 12V system?

The module is rated for 12V operation with a maximum of 15.5V, so it matches a standard 12V supply directly.

What does the 18W cooling power mean when the cooler is installed in a real device?

It represents the maximum heat the cold side can pump when the hot side is properly heat-sinked and the temperature difference is near zero.

What interface standard does the 29cm power cord use and what current does it limit?

The bare-wire cord connects directly to a 12V source and the module draws up to 3A at its 18W rating.

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