... control sensor (It can be triggered by light under the mode of "S1" and "S2") -- Assist light (current flashlight as slave flashgun when ... , -- Hot shoe mount,-- Connect point-- Mode select button, -- Pilot signal light, -- Mode Button,-- Power Switch,-- Mode select indicator,-- Test button-- Flash ... , 1/8, 1/16, 1/32, 1/64 )"Power Saving: " Stand by mode, 30mins to power off mode. 60mins to power off ...