Up to six (6) electronic LED drivers. 277-480 VAC, 50/60Hz single-phase input; 0.90 PF. Minimum 90{04aef197e2a33ee94af7b49af44700ef917df47392523dfa0075c5fa9ebd8a96} electrical efficiency. 1050mA or 1400mA Class I constant-current outputsee Circuit Detail for information on drive current and load configuration requirements. Standard 0-10V dimming with 10-100{04aef197e2a33ee94af7b49af44700ef917df47392523dfa0075c5fa9ebd8a96} range. EMC compliant with FCC 47 CFR Part 15, Class B. Passes IEC 61000-4-4 EFT and IEC 61000-4-5 (Class 4) surge evaluation. Driver quick-release mechanism provides mechanical and electrical disconnection of individual drivers for servicing purposes.