19
E
xp
a
n
d
e
d
S
ys
tem
U
s
in
g
A
u
x
R
e
la
y
R
ec
ept
ac
les
1
2 3
4 5
6 7
X
R
31
5
A
-O
n
S
w
it
c
hed
1
2
3 4
5 6
7
S
X
1
1
20
-RT
LE
D
an
d 1
K
,
1/
4W
R
es
is
tor
C
onf
ir
m
at
ion
(I
f R
equi
red)
P
ro
g
ra
m:
U
p &
D
ow
n
Inp
ut
s
=
M
om
ent
ar
y
12v
dc
O
ut
put
=
LE
D
A
u
x
Ou
tp
u
t =
A
,
B
o
r C
A
ux
D
el
ay
O
n =
[
S
et
a
s
N
eed
ed]
A
ux
D
el
ay
O
ff
=
[
S
et
a
s
N
eed
ed]
F
ig
ur
e 3
M
om
ent
ar
y
S
wit
c
h
