F&F, Security Sensors, models:

5902431674896	Manual
CKF-318 TRMS	Manual
DR-04G	Manual
DR-04W	Manual
DR-06W	Instruction Manual
DR-08	Quick Start Manual
DR-09 24V	Manual
DR-09B-IP65	Manual
DR-30M	Manual
DRL-60-12	Manual
DRL-60-230	Manual
DRM-02	Quick Start Manual
DRM-02 24 V	Manual
DRM-05	Manual
DRM-08	Setting Instructions Manual