Adafruit 970 ULN2803 Darlington Solenoid Review

Not sure if I got a fake or something but I used Reef-Pi to build the controller. The part overheated every time I tried to plug it in. It runs for a few seconds and then gets very hot. I know you're thinking I probably wired something wrong, but I installed the same part I bought from another supplier on Revain and it's been running for 6 months now with no problems.