HI Please help

I'm replacing the batteries in the power sounder on an astra coupe 2001 2.2....

I'm using the guide and bought the batteries from cell pack solutions (as guide suggests)
But now that I’ve stripped the power sounder down the batteries look different and have 2 + and 2 - connections, the replacement batteries have 2+ and only 1 -.

The original batteries are VARTA 3.6v 140mAh 3/v150H NiMH, and replacements are EMMERICH NC-M120-3.6v.

Are these replacements ok to use?

Comments appreciated

Richy