Exact
With Eibmark SV-2 power supply you need a chock after the SB640 module.
Check here : http://www.eibmarkt.com/isroot/eibmarkt/..._DR1-4.pdf
With Eibmark SV-2 power supply you need a chock after the SB640 module.
Check here : http://www.eibmarkt.com/isroot/eibmarkt/..._DR1-4.pdf