Providing a 800Ws output in a compact design, the Siros 800 S WiFi/RFS 2.1 Monolight from Broncolor is a reliable studio flash unit with Wi-Fi connectivity and a built-in RFS 2.1 receiver for wireless control and triggering. It has a 9-stop power range which is adjustable in 1/10 or full stop increments for great control over light output. The Siros S is also quite fast with a flash duration from 1/8000 - 1/500second and a recycle time of 0.04 - 2.9 seconds depending on power settings. Additionally, the monolight has a halogen modeling light.

Built into the Siros S is a specialized Speed Mode that speeds up the charging time and flash duration to provide a fast sequence of exposures, up to 50 per second at the fastest setting. Also, the unit has a USB connection for software updates and is fan cooled for temperature control. An integrated reflector and mount are included for adding modifiers to the light.

800Ws, 9-Stop Power Range    1/10 or Full Stop Intervals    Flash Duration: 1/8,000 - 1/500 Sec    Recycle Time: 0.04 - 2.9 Sec    Halogen Modeling Lamp    Wi-Fi Connectivity and Mobile App    Integrated Broncolor RFS 2.1 Receiver    Speed Mode for up to 50 Flashes per Sec    USB Connection for Updates    Fan Cooled, Integrated Reflector

When the Siros is connected to a Wi-Fi network, each light can be identified by a different-color LED and can be easily controlled using the bronControl app for smartphones and tablets

With the integrated Broncolor RFS 2.1 receiver, users can use the RFS 2.1 transmitter for remote control from the camera

Cut-off technology uses a microprocessor to calculate the flash duration to an output, enabling sequences with up to 50 flashes per second

Enhanced Color Temperature Control technology adapts flash voltage and duration in order to achieve a constant color temperature over the entire variation range

Individual power distribution means the unit has controllers for each lamp in order to have greater control over the flash power range

Speed mode reduces flash duration and charging time while reducing the maximum power in order to achieve a series of rapid exposures without overheating

Single rotary control for flash power output setting, a slight turn provides 1/10 stops while a "Twist" function allows for whole stops

Internal discharge when power is reduced

Grip features double-wall plastic with a special coating for durability and comfort

Aluminum stand adapter can be used with the handle to function as a built-in floor stand

Standard sync port and built-in photocell are available for more elaborate triggering setups

Black aluminum body construction

Designed and developed in Switzerland

Related Questions and Answers

Q: 1. Siros L does work, I know it. Does Siros S also work with the new Broncolor RFS 2.2 Transceiver, so that you can use HS?

A: Siros 800S and 800 WiFi / RFS2 (non-S) offer HS functionality with firmware version 08 or later.The current version can be checked by holding down the silver dial/button and powering on the flash. The number that shows briefly is the firmware version.Firmware updates for Siros are available for Mac or PC from bron.ch/sirosfirmwareupdate, and only require a standard Micro USB cable.

Q: 2. can you synchronize with other transmitters to make it work together with other flashes?

A: To sync with other transmitter systems, Siros 800S features a standard 3.5mm sync input on the bottom of the unit. Using the appropriate receiver unit and adapter cable, this would allow for the Siros to work with other systems.

Q: 3. Hi, Does anyone know what standard reflector ships with the Siros monoblocs? is it the L40?

A: This monolight would ship with an integrated reflector and the L40 reflector is sold separately. The item code for that reflector is BRRL40. Please see the image for that below:

Q: 4. What is the umbrella shaft diameter; 7mm or 8mm?

A: The Broncolor Siros 800 S WiFi/RFS 2.1 Monolight BH #BRS800SWFRF uses the standard 8mm umbrella shaft size.

Q: 5. According to the Specs, this monolight's power ranges from 4 to 800 Ws. I would like to buy the 2-light kit for use in a small home studio (600 sq ft) for product photography. I would like powerful lights that can be dialed down to low light output when needed. Can this powerful monolight also be used for low light photography? Thanks in advance.

A: While the power range could work for shooting products, it all depends on the size of your space and the type of products you will be shooting. One thing to keep in mind is that any modifiers used over the monolights can further reduce the output.

Q: 6. What remote would I need to make these lights work with a Leica S3?

A: The Broncolor RFS 2.1 Transceiver, B&H # BRRFS2T, would be a transmitter that may be used with the Leica S3 Medium Format DSLR Camera to wirelessly trigger the lights in the Broncolor Siros 800 S Pro 3-Light Kit.

Q: 7. How do I meter the power output in HS mode? Do I need a special light meter or a regular flash meter will work?

A: Some third-party meters (e.g. Sekonic) offer the ability to meter in HS mode however we have not tested these units.

Q: 8. Does this product comes with a RFFS 2.1 trigger?

A: An RFS2.1 transmitter is not included so that you may purchase separately either the 2.1, or an RFS2.2 transmitter, available for Canon, NIkon, Fuji, or Sony cameras, should you desire HS flash Siros 800S.

Q: 9. I Have Grafit powerpack and various J and unilght heads as well as boxlights and pulsospot4. I prefer monobloc heads. Looks like my studio needs will be met nicely by the Siros L 800’s. My question is do these integrate well with the standard powerpack systems of Broncolor like my Grafit and heads? Ie: color temp and output the same? Fast flash duration settings like 1/7000sec t.1? Modifiers all fit same bayonet mounts? iOS app control, is there a way to include my older pack system?

A: The Broncolor Siros 800 S would have a flash duration of 1/4000 at t.1 and would accept all Pulso/Primo type modifiers. While they can be triggered optically from your current Broncolor pack/head system, you cannot trigger your pack/head system using the bronCONTROL App.

Q: 10. Can I use the Siros Lithium batteries on these lights or do those batteries only work for siros l?

A: The Siros 800S is mains / wall power only, the Siros L rechargeable lithium ion batteries are only compatible with the Siros L monolights.