Variable

Measured items

Average

Standard deviation

Rank

Service innovation

1) Provide home security monitoring service

3.715

0.790

4

2) Provide home access control management services

3.680

0.736

6

3) Provide home care services

3.693

0.771

5

4) Provide real-time information

4.016

0.724

1

5) Easy to operate

3.807

0.807

3

6) Low system failure rate

3.924

0.769

2