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Description
Broncolor Siros 400 S WiFi/RFS 2.1 Monolight400Ws, 9 Stop Power Range 1 10 or Full Stop Intervals Flash Duration: 1 8,000 1 1000 Sec Recycle Time: 0. 02 1. 4 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 Providing a 400Ws output in a compact design, the Siros 400 S WiFi RFS 2. 1 Monolight from Broncolor is a reliable studio flash unit with Wi
- 400Ws, 9-Stop Power Range
- 1/10 or Full Stop Intervals
- Flash Duration: 1/8,000 - 1/1000 Sec
- Recycle Time: 0.02 - 1.4 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
Providing a 400Ws output in a compact design, the Siros 400 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 - 1/1000second and a recycle time of 0.02 - 1.4 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.
- 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
In the Box
Broncolor Siros 400 S WiFi/RFS 2.1 Monolight
- Flashtube
- Modeling Light
- Power Cord
- Limited 2-Year Warranty
| Maximum Watt/Seconds | 400 Ws |
| Control Range | 9 stops in 1/10 or full stop intervals 2-400 Ws |
| Guide Number | With L40 Reflector: f/22 5/10 at 6.5' (2 m) and ISO 100 With P70 Reflector: f/32 5/10 at 6.5' (2 m) and ISO 100 |
| Recycle Time | 100 V, 50 Hz: 0.02-1.40 sec 120 V, 60 Hz: 0.02-0.95 sec 230 V, 50 Hz: 0.02-0.65 sec |
| Flash Duration | Min. Energy: 1/6500 sec (t 0.1) / 1/13000 sec (t 0.5) Max. Energy: 1/1000 sec (t 0.1) / 1/2200 sec (t 0.5) With HS Flash Tube: 1/8000 sec |
| Color Temperature | Max. Energy with P70: 5750 K With HS Flashtube and P70: 5500 K |
| Flash Ready Indicator | Visual and audible |
| User Replaceable Flashtube | Yes |
| Changeable Reflector | Yes |
| Modeling Light | Max. 300 W / 120 V |
| Operating Voltage | Automatic adaptation to mains voltage 100-120 VAC, 50-60 Hz, 5.5 A or 200-240 VAC, 50-60 Hz, 3.5 A |
| Built-in Slave Cell | Yes |
| Fan Cooled | Yes |
| Auto Dump | Yes, when power is reduced |
| Standards | EN60065/EN61000-4-2 EN55015 EN301489-1/EN301489-3 ISO10330 |
| Dimensions | 12.6 x 5.1 x 7.1" (32 x 13 x 18 cm) |
| Weight | 7.1 lb (3.2 kg) |
| Packaging Info | |
|---|---|
| Package Weight | 10.5 lb |
| Box Dimensions (LxWxH) | 13.5 x 9.2 x 8.9" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
It's so perfect
Size: 10FT*6FT, Color: Black
It is very long and big
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 1
Garbage
Size: 6FT*6FT, Color: Black
This product is absolute garbage! It literally took all day to put it together and if the air conditioning blows on it the wrong way than the whole thing top over and it falls apart.
It’s not made of quality material and is very flimsy. The only reason I’m not returning it is because it’s too difficult to put together and I don’t wanna spend that much time trying to take it apart. Do not buy this!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 25, 2025
★★★★★ 3
Cheap
Size: 6FT*6FT, Color: Black
They serve their purpose as long as you leve them in one place and not moving them around and they're kinda flimsy and some of the velcros are cut too short and can't stay closed
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
Worth the investment
Size: 1 Panel, Size: 1 Panel
I had to order this in an emergency. To put it in brief words, I live in a two level studio unit. My bedroom TV fell backwards off the bureau accidentally and down the stairs to its demise. Putting this together was no problem, instructions were thorough and easy. It came with several bars that connected together smoothly and an Allen key for the brackets and screws for the feet. I did one less horizontal bar on top and bottom so it could fit, which was great because with all of them on it was too long. However I ran into the difficulty of the horizontal bars popping out of the brackets during the last stages, but eventually got it done. I was also looking for a specific type of divider where I could adjust the feet so I could tuck it in between the dresser and banister. Glad I made this purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
★★★★★ 1
You Get What You Pay For! A Piece Of Junk!
Size: 1 Panel
Flimsy and a piece of junk. Don’t waste your money. Assembly is a pain because it is so flimsy. Divider is thin. You can see right through it. Very wobbly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
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