The Profoto Pro-B2 1200R Ws Power Pack with Radio Slave provides an 8-stop flash adjustment. It may be fired by your Pocket Wizard transceiver or transmitter with its built-in 32 channel radio slave receiver.
The Pro-B2 can provide 200 full power flashes per charge. Achieve action-stopping flash durations, even at maximum power output. Recycle time is 1.8 seconds @ full power, and .04 seconds @ 600 Ws.
Using the snap-on universal power adapter, the Pro-B2 can operate as a regular AC powered flash generator while the battery is being recharged. The adapter is fast, charging an empty battery in just 2.5 hours, and it accepts a wide range of input power: 12-24V or 90-240V. Included with every Pro-B2 is a standard 110/230V charger, loading the battery in 5 hours. In addition, the Pro-B2 battery is completely memory free; there is no penalty for partial charging.
| Maximum Watt/Seconds | 1200 |
| Guide Number | f/45.3 @ 2m, ISO 100 with standard zoom reflector |
| Recycle Time | 1.8 sec @ maximum power, .04 sec @ minimum power |
| Flash Duration | 1/2200 sec @ maximum power, 1/7400 sec @ minimum power |
| Flash Variability | 8 f/stops: 9 - 1200 w/s |
| Voltage Stabilization | Yes, +/- 1% |
| Distribution | Asymmetrical or Symmetrical |
| Head Outlets | 2 |
| Flash Ready Indicator | Charge Ready Light/Open Flash, Switchable Audible Beep |
| Built-in Slave Cell |
32 channel Pocket Wizard Radio Slave Optical switchable |
| Sync Voltage | 20V, less than 0.3 ms |
| Operating Voltage of Charger | Auto ranging 90-130V and 180-260V, 45-65HZ |
| Battery Level Indicator | Four Color LED's on Top Panel |
| Battery Charge Time | 5.5 hours with AC Multi-Voltage Charger, 2.5 hours with Car Charger |
| Number of Flashes | 200 @ full power, with full charge |
| Auto Dump | Yes |
| Fan Cooled | No |
| Dimensions | 9.4 x 6.7 x 9.1" (23.8 x 17 x 23cm) |
| Weight | 24.3 lbs (11kg) |