Chapter 2 ___________________________________________________________ Product Overview 
 
VAISALA ________________________________________________________________________ 17 
 
  1310-039 
Figure 4  Transmitter Parts – Inside 
Opening for cable (wiring from top). 
Opening for cable (wiring from behind, recommended). 
Label for RS-485 baud rate DIP switch settings. 
Included only on digital models. 
Orientation arrow – should point up after the mounting base has 
been installed. 
Place for zip tie (for cable strain relief) 
RS-485 termination jumper (connects a 120 Ω resistor). 
Included only on digital models. 
GM10 module (measures CO
2
). 
DIP switches for common configuration options. Digital models 
have an extra DIP switch bank for transmitter address. 
TM10 module (measures temperature only) or 
HTM10 module (measures humidity and temperature). 
HUMICAP
®
 sensor (on models with humidity measurement).