LiftMaster Miracle-One MIRACLE ONE Manual - Page 4

LiftMaster Miracle-One Manual

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ETL LISTINGS AND INSTRUCTIONS G) For a gate operator utilizing a non-contact sensor such as a photo beam: 1. See instructions on the placement of non-contact sensor for each type of application. 2. Care shall be exercised to reduce the risk of nuisance tripping, such as when a vehicle trips the sensor while the gate is still moving. 3. One or more non-contact sensors shall be located where the risk of entrapment or obstruction exists, such as the perimeter reachable by a moving gate or barrier. H) For a gate operator utilizing a contact sensor such as an edge sensor: 1. A hard wired contact sensor shall be located and its wiring arranged so that the communication between the sensor and the gate operator is not subjected to mechanical damage. 2. A wireless contact sensor such as the one that transmits radio frequency (RF) signals to the gate operator for entrapment protection functions shall be located where the transmission of the signals are not obstructed or impeded by building structures, natural landscaping or similar obstruction. A wireless contact sensor shall function under the intended end-use conditions. 3. One or more contact sensors shall be located on the inside and outside leading edge of a swing gate. Additionally, if the bottom edge of a swing gate is greater than 6 inches (152 mm) above the ground at any point in its arc of travel, one or more contact sensors shall be located on the bottom edge. 3

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ETL LISTINGS AND INSTRUCTIONS
ETL LISTINGS AND INSTRUCTIONS
ETL LISTINGS AND INSTRUCTIONS
Fo
r
a gate ope
r
ato
r
u
tilizi
n
g a
n
o
n
-co
n
tact
s
e
ns
o
r
su
ch a
s
a photo beam:
S
ee i
ns
t
ru
ctio
ns
o
n
the placeme
n
t of
n
o
n
-co
n
tact
s
e
ns
o
r
fo
r
each type of applicatio
n
.
Ca
r
e
s
hall be exe
r
ci
s
ed to
r
ed
u
ce the
r
i
s
k of
nu
i
s
a
n
ce t
r
ippi
n
g,
su
ch a
s
whe
n
a vehicle
t
r
ip
s
the
s
e
ns
o
r
while the gate i
s
s
till movi
n
g.
O
n
e o
r
mo
r
e
n
o
n
-co
n
tact
s
e
ns
o
rs
s
hall be located whe
r
e the
r
i
s
k of e
n
t
r
apme
n
t o
r
ob
s
t
ru
ctio
n
exi
s
t
s
,
su
ch a
s
the pe
r
imete
r
r
eachable by a movi
n
g gate o
r
ba
rr
ie
r
.
A ha
r
d wi
r
ed co
n
tact
s
e
ns
o
r
s
hall be located a
n
d it
s
wi
r
i
n
g a
rr
a
n
ged
s
o that the
comm
un
icatio
n
betwee
n
the
s
e
ns
o
r
a
n
d the gate ope
r
ato
r
i
s
n
ot
su
bjected to mecha
n
ical
damage.
A wi
r
ele
ss
co
n
tact
s
e
ns
o
r
su
ch a
s
the o
n
e that t
r
a
ns
mit
s
r
adio f
r
eq
u
e
n
cy (RF)
s
ig
n
al
s
to
the gate ope
r
ato
r
fo
r
e
n
t
r
apme
n
t p
r
otectio
n
f
un
ctio
ns
s
hall be located whe
r
e the
t
r
a
ns
mi
ss
io
n
of the
s
ig
n
al
s
a
r
e
n
ot ob
s
t
ru
cted o
r
impeded by b
u
ildi
n
g
s
t
ru
ct
ur
e
s
,
n
at
ur
al
la
n
d
s
capi
n
g o
r
s
imila
r
ob
s
t
ru
ctio
n
. A wi
r
ele
ss
co
n
tact
s
e
ns
o
r
s
hall f
un
ctio
n
un
de
r
the
i
n
te
n
ded e
n
d-
us
e co
n
ditio
ns
.
O
n
e o
r
mo
r
e co
n
tact
s
e
ns
o
rs
s
hall be located o
n
the i
ns
ide a
n
d o
u
t
s
ide leadi
n
g edge of a
s
wi
n
g gate. Additio
n
ally, if the bottom edge of a
s
wi
n
g gate i
s
g
r
eate
r
tha
n
6 i
n
che
s
(152
mm) above the g
r
o
un
d at a
n
y poi
n
t i
n
it
s
a
r
c of t
r
avel, o
n
e o
r
mo
r
e co
n
tact
s
e
ns
o
rs
s
hall
be located o
n
the bottom edge.
Fo
r
a gate ope
r
ato
r
u
tilizi
n
g a co
n
tact
s
e
ns
o
r
su
ch a
s
a
n
edge
s
e
ns
o
r
:
G)
H)
1.
2.
3.
1.
2.
3.
3