Xantech, Extender, models:

172-77	Installation Instructions
172-78	Installation Instructions
172-94	Installation Instructions
796-20	Installation Instructions
COMPAUDEXT	User Manual
EXP9	Installation Instructions Manual
HDMIC5IR	Installation Instructions
HDMIEXTEND	User Manual
XT-HDBT-EX100-4K18G-KIT	User Manual
XT-HDMI-SM-4K18G	User Manual