Optex Water It TC-3000-DI Instruction Manual page 10

Wrap the cable protective cover on the sensor side of the
1
sensor cable.
Hang the sensor by a chain wire with an attached lifting lug.
2
Run the lifting lug
through the end of
the chain.
The chain kit (TA-2: for TC-3000-D only) is optionally available.
Reference For details, please contact the dealer or visit our website:
https://www.optex.co.jp/e/products/environmental-sensor/
10
Holes for inserting
the lifting lug
Open up the ends of the lifting
lug and insert into holes of the
hanging attachment.