I bought 2 identical controllers, installed exactly the same one, one worked, and the other immediately smoked! I had 20 days right of return, so it became a warranty case. At first the seller tried to help, but after 2 weeks of providing forms and photos of my system and the damage, it turned out they were just looking for a reason not to honor the warranty. Revain eventually agreed to a discounted refund (-$50) for the defective block. I bought a replacement at full price and now the seller…