11a. How many smoke detectors are installed in this home?
01 [] Only 1 (11c)
Number ____ (11b)
00 [] None (12)
99 [] DK (12)
b. How many of them are now working?
Number ____ (11d)
00 [] None (11f)
c. Is it now working?
1 [] Yes
2 [] No (11f)
9 [] DK (11f)