HiLetgo 2pcs W1209 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-channel Relay and Waterproof

From the product description, check product page for current description, price and availability:

• 100% complete machine patch, wave soldering, stable performance, good consistency.
• Embedded CPU chip (MCU), more intelligent, lower power consumption.
• Automatic power set memory (MCU built-in EEPROM memory unit).
• Control accuracy of 0.1 degrees Celsius. Have been tested for stability, consistency and reliability.
• Tips: – long press set to get menu, starts at P0 – press +/- to get next P-parameter – press set to choose that parameter – press +/- to select the value you want for that parameter – press set to accept it – long press +/- = reset to default – power-out does reset to default – default temp set is 34.5

Note from HBF: These controllers require some work to get up and going in your project.  They are unwired and require additional materials to integrate into your project.  Make sure this has appropriate specifications for your intended application.  If you’re looking for a pre-wired controller, consider – Inkbird Dual Stage Temp Controller [Hands on Review]

HiLetgo 2pcs W1209 12V DC Digital Temperature Controller Board Micro Digital Thermostat -50-110°C Electronic Temperature Temp Control Module Switch with 10A One-channel Relay and Waterproof – affiliate link, note that multiple variations of this product may be available, as such a different version may appear at this link


Also Consider: Inkbird Dual Stage Temp Controller [Hands on Review] – Inkbird Deals

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Make sure the components you use are compatible and rated for your intended application.  Contact manufacturer with questions about suitability or a specific application.  Always read and follow manufacturer directions.