Safety sensor posts, Trench for wiring, Assemble safety sensors – Chamberlain THE PROTECTOR SYSTEM 916GA User Manual
Page 2

Ins
ide Proper
ty
Metal
OR
Wood
ENTRAPMENT 
Safety Sensor Posts
OPEN
Safety Sensor Posts
Inside Property
Outside Property
CLOSE
Safety Sensor Posts
Inside Property
6" (15 cm) trench for 
safety sensor wires
OPEN SAFETY SENSORS
Inside Property
6" (15 cm) trench for 
safety sensor wires
Out
sid
e Property
6" (15 cm) trench 
for safety sensor 
wires
CLOSE SAFETY SENSORS
ENTRAPMENT SAFETY SENSORS
NOTE: For ideal protection the safety sensors should be installed as close 
to one another as possible with the maximum distance up to 30' (9.1 m).
To AVOID damaging gas, power or other underground utility lines, 
contact underground utility locating companies BEFORE digging.
ATTENTION
AVERTISSEMENT
AVERTISSEMENT
AVERTISSEMENT
WARNING
CAUTION
CAUTION
WARNING
WARNING
PRECAUCIÓN
ADVERTENCIA
ADVERTENCIA
ADVERTENCIA
2
SAFETY SENSOR POSTS
Use a metal or treated wood post (not provided) to elevate the sensors. 
Safety sensors must be installed no higher than 24" (61 cm) above the 
ground.
POWER
Disconnect power and batteries to the operator.
TRENCH FOR WIRING
Before digging, contact local underground utility locating companies.
Dig a narrow trench 6" (15 cm) deep from control box to safety sensor 
posts. Be careful not to damage any buried wire. Run conduit from 
control box to safety sensor posts and run low voltage wire* (not 
provided) through conduit.
* UL approved Class 1 or Class 3 direct burial/underground, sunlight/UV resistant 16 gauge 2-conductor/standard wire.
