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The key to wireless triggering and TTL remote control of the B1 Air is Profoto's Air Remote TTL-C transmitter for Canon. Operating on the 2.4GHz bandwidth, the transmitter, really a controller, has 8 frequency channels with 3 groups per channel and a range of up to 330' for TTL triggering and 1,000' for normal triggering. Each channel has power ratio capability of +/- 2 stops. If you prefer to use manual, you have +/- 9 stops power variation. You've also got modeling light, unit shut-down and first or rear curtain control. Both the TTL-C and the B1 500 Air TTL have mini-USB connectors for firmware updates directly from Profoto's website. The Air Remote TTL-C will also trigger non-TTL Air heads and packs from Canon cameras but without the TTL feature.
|FREQUENCY BAND||2.4 GHz|
|GROUPS||3: A, B, C|
|RANGE||Up to 1,000' (300 m) for normal triggering
Up to 330' (100 m) for TTL
|CONNECTION||Foot for Canon hot shoe
Mini-USB for firmware updates
|POWER||2x AAA batteries|
|BATTERY LIFE||Up to 30 hours|
|INDICATORS AND CONTROLS||LCD screen display:
Group, channel, sync, TTL/Manual, power levels, remaining remote battery power
Unit On/Off, channel selection, + power, - power, modeling light, TTL/Manual mode, head selection, first or rear curtain sync, A group, B group, C group, test
|DIMENSIONS||3.0 x 2.3 x 1.6" (77 x 60 x 40 mm)|
|WEIGHT||3.2 oz (90 g)|