For a Home Pilot (HP-300), you can combine up to 14 devices max. / product family :

Product familyRinger product references
Bulbs– ST-E27
Plugs– PG-100
– PG-500
– GDRF-100
– GDRF-500
Micro-modules electrical devices– RS-100
Relay– GR-100
Micro-modules shutters– RD-100
Sound– WEA-100
Security– AT-001
– C2000
– C3000
– C60
Detectors– C30
– C50
Orders– RC-001
– RC-002
– RC-003
– RC-004
Bells– RG-001
– RG-110
– RG-120
– RG-300
– RG-400
Sensors– WA-50