... 2.DC12V 3.warranty 3 years 4.DMX512/1990 signal LED DMX512 signal repeater LT-123 is dedicated to amplify, distribute, ... of DMX512.1. It’s specially designed for signal shaping amplification for DMX512 signal which attenuated after a long-distance transmission, ... use the multiple signals expansion output control , increase DMX l signal amplifier to distribute multi-channel control.3. 1 channel input, ...