GDL Temperature Humidity Logger with Display ........................................................ 21
Turning the GDL On and Off........................................................................................ 21
GDL Sample Screen.................................................................................................... 22
The GDL Summary Screen ......................................................................................... 23
GDL Graph Screen ...................................................................................................... 23
GDL Buttons ................................................................................................................ 24
Replacing the GDL Battery .......................................................................................... 24
GDL Specifications ...................................................................................................... 25
