If it does not have the normal connected pattern of 2 rapid flashes (on, off, on, off, takes ≈ 1 second) then a pause (off) of several seconds I would say the module is defective and you should get a replacement.
If it does not have the normal connected pattern of 2 rapid flashes (on, off, on, off, takes ≈ 1 second) then a pause (off) of several seconds I would say the module is defective and you should get a replacement.