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HOBO® U23-002 Replacement Cable/Sensor (CABLE-U23-002) 

12990-B MAN-CABLE-U23-002 

The U23-002 Replacement Cable/Sensor replaces a damaged cable on the U23-002. The replacement cable includes a built-in 
temperature sensor and an RH sensor. 

Contents: 

 

Cable/Sensor 

 

Dome Nut/Grommet assembly (installed on cable) 

 

Cable Tie 

Required Equipment: 

 

Adjustable Wrench 

 

Utility Knife

 

 

Removing the Existing Cable/Sensor 

1.

 

Unscrew the grommet from the case and slide the 
grommet/dome nut assembly down the cable. Use a wrench 
if necessary. 

 

2.

 

Remove the end cap from the case. Twist the end cap 
counterclockwise until the bumps on the cap line up with the 
notch on the case, and then pull the cap off of the case. 

 

3.

 

Slide the board out of the case.  

4.

 

Remove the 3 desiccant packs and inspect them. If they are 
not bright blue, dry them by leaving them in a warm (

70

o

(158

o

F), dry location until the bright blue color is restored. If 

a desiccant pack remains pink and will not turn blue, replace 
it with a new desiccant pack (Part #: DESICCANT1). 

5.

 

Using a utility knife, cut the tie holding the sensor to the 
board. 

6.

 

Disconnect the cable from the jack on the board (pull straight 
out). 

 

7.

 

Pull the cable out through the case. 

8.

 

Discard cable, dome nut, and grommet. 

Connecting the New Cable/Sensor 

1.

 

Slide the new cable through the case, connector end first. 

2.

 

Slide the dome nut/grommet assembly up towards the case 
and hand-tighten the grommet. Do not tighten the dome nut 
until assembly is complete to allow for sliding of the cable. 

 

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