*Powered by AA or 9v battery.*Learning code with receiver,Fixed code with transmitter.*Range:150-250m.*With ON/OFF switch safeguard.*Output power: 9v.*Auto-testing.*With"Single",All"and fixed time"Sequencer"firing function.*By using KFE2202B-6,it can control at least 6pieces of receivers independently. This makes the unit perfect fo difficult shoot sites for smaller shows,special effects,family shows and wedding displays.