When using GP-4100 series, there is a limit for some of the features.1.3.6 GP-4100 Series
10.17.1 Restrictions for Switches
10.17.2 Restrictions on the Delay Feature
10.17.3 Restrictions on the Multifunction Feature
10.17.4 Group Function Limitations
10.17.5 Restrictions for Selector List Parts
1.3.6 GP-4100 Series