suggested replacement (also legacy product):
https://lairdthermal.com/thermal-wizard/images/tem/HiTemp%20Series/ET20-65-F2A-1312/HOT20-65-F2A-1312-datasheet.pdf
another replacement: https://lairdthermal.com/products/thermoelectric-cooler-modules/peltier-optotec-otx-htx-series/OTX20-65-F2A-1312-11-W2.25
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