Profoto's Air Remote TTL transmitter for Sony is the key to wireless triggering and TTL remote control of its B1 and B2 AirTTL Off Camera Flash heads. Operating on the 2.4 GHz bandwidth, the transmitter, really a controller, has 8 frequency channels and 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 and unit shut-down. The TTL-S, the B1 500 AirTTL and B2 Off Camera Flashes have micro-USB connectors for firmware updates directly from Profoto's website, such as High Speed sync which allows sync speeds as short as 1/8,000 sec. Besides the B1 and B2, the Air Remote TTL-S will also manually remote trigger all Profoto Air packs and monolights but without the TTL feature.
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Features:

• Manual and TTL • Control of AirTTL Flashes
• Manual Control of Air Flashes
• Compatible with Sony ADI / P-TTL
• Range: 1000' (Normal) / 330' (TTL)
• 8 Channels; 3 Groups
• High-Speed Sync up to 1/8000 Second
• Nine Stops of Manual Power Control
• ±2 EV of TTL Power • Ratio Control
• Turn On/Off Modeling • Light & Heads

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Compatible Cameras
Sony
a9
a7R II
a7R III
a7S II
a7 II
a6500
a99
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AirTTL (TTL, HSS, Remote Control, Manual Sync)

B1 500 AirTTL
B1X 500 AirTTL
B2 250 AirTTL
D2 200 AirTTL
D2 1000 AirTTL
Pro-10 2400 AirTTL