Relay Issues

[GrgorOHart]

I'm having an issue with my 5v relay turning on when battery power is turned on. Then the relay won't shut off until I turn the wand on. If I have the wand on when I turn power on, the relay fires for about 1 second then shuts off and then functions properly. I'm using an Arduino Nano and a Hiletgo 5v relay. The relay is powered by 5v usb from the Talentcell. When I volt test the signal wire to the relay, I'm getting about 3.8v, which is normal for a Nano. Is there a specific relay I should use of something in the code I need to update? Thank you in advance!