4. At the same time, slide the pen out from the pen holder.
5. Install new pens following Section 2.5.1, Steps 3 through 6.
2.6  Installing the Temperature/Humidity Sensor
The temperature/humidity sensor can either be directly attached to the recorder
using its own attached short cable or be extended by using the 6 ft remote sensor
cable.
2.6.1  Using the Short Cable
1. Place the handle part of the sensor in to the sensor clip on the side of the
recorder as shown in Figure 2-15.
Figure 2-15.  Attaching the Sensor (left picture), Correct Position (center), 
Incorrect Position (right)
2. Install the connector into the socket at the side of the recorder.  Make sure the
sensor cable is untwisted.
3. Slide the sensor up so that the sensor vents are well above the top of the case.
Refer to the center picture in Figure 2-15.