6pcs 45mmx100mm Film Heater Plate Adhesive Pad, PI Heating Elements Film 24V 30W Strip Heater Adhesive Polyimide Heater Plate

These are amazing! They're perfect for heating up a small area on my equipment. They worked amazingly well...

Product quality was as advertised

I installed 4 of the 45x100, 30W @ 24V heaters on my 14 gallon stainless conical fermenter and run them in parallel with a 12VAC garden light power supply. I just tested the setup last night and it worked to heat up 8 gallons of water a couple of degrees within a couple of hours. I may update after I brew a batch, but I think this is enough to control my fermentation temperature. Using with an Inkbird ITC-308 WiFi controller. I can up the voltage to 24V if I need 2x the heat.

Ok

Great for a simple heater for beakers. Stick this on the bottom of a beaker, put a small thermal Barrer at the bottom (like a bit of rubber of something) and it will even work with a stirrer. Be sure to use a pid with this as it will get hot for small volumes.

I bought this for a project; however, it did not get hot enough for it. Beyond that, though, the heating films did work as intended and will serve well for other projects. Overall, I do not believe this is a bad product, especially for its price.

Exactly as described, 1W heat generated by each heater given 5V power.

Bad design with exposed contacts which can short your power supply.