Ahlborn, Data Loggers, models:

ALMEMO 2290-8	Operating Instructions Manual
ALMEMO 2590-9 V5	Operating Instructions Manual
ALMEMO 2690-8	Operating Instructions Manual
ALMEMO 2690-8A	Operating Instructions Manual
ALMEMO 2890-9	Operating Instructions Manual
ALMEMO 3290-8 V5	Operating Instructions Manual
ALMEMO 500	Supplementary Instructions Manual
Almemo 8990-8	Operating Instructions Manual