Why my Arduino output active on reset using relay module? I have a problem with relay module when I reset the arduino all the relay go active i.e all the light turned on by itself which is  a drawback of my project .Arduino pin output is negative by default i.e on reset after sending command through hc-06 it becomes positive i.e relay  become inactive. In the other hand when I use LED instead of relay module it Works fine I used One Pin ground and other to my output with 330ohm resistor. Any helping word in this regard will be appreciated greatly.
Sorry for my poor English.
The relays may be low-level triggered relays so to turn them on you need to set the pin connected to the relay to digital LOW and to turn them off you need to set the pin to digital HIGH; Please verify this first whenever you get a new relay and there is no mention on it if its a low-level triggered relay;