Rotronic, Transmitter, models:

CF5-D	Installation Manual
CF5/8 Series	Setup And Adjustment
HygroClip IC-1-EX	Operating Instructions Manual
HygroFlex	Instruction Manual
HygroFlex 1	Instruction Manual
HygroFlex 5 Series	Short Instruction Manual
HygroFlex HF3 Series	User Manual
HygroFlex HF8	User Manual
HygroFlex TF5	User Manual
HygroFlex5-EX	Instruction Manual
PF4	Instruction Manual