400x400 mm silicone heat pad with solid sate relay, self-adhesive specifically designed exclusively for the Ender Extender 400 extension kit.
The solid state relay in this product is not likely genuine. They are labeled as 40AMP however I have confirmed that the device inside that performs the high current switching (MOSFET) is a BTA24-800, rated at 25 amperes RMS. The heat pad itself will pull 5 AMPS (600 / 120V), or 2.5 AMPS (600/240v), well below the actual 25 AMP rating of the MOSFET.
In comparison, an actual, genuine SSR costs over $75 at 40 AMPs. Even those listed on Amazon are non-genuine. Buyer assumes all risks and liabilities for this item. See disclaimer
Specify 120 V or 240 V when ordering
Disclaimer and installation guide