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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 156 reviews
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Product Reviews
★★★★★ 3
Defective Battery
Style: 20V Pwr Drv Trimmer (LST522-CA)
The trimmer works fine. Luckily I have many batteries. The battery that came with it is defective and I can’t seems to just exchange the battery for a good one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
FAST. Powerful. Easy to use.
Size: 8" Edger New
WOW! I bought a new house a couple of months ago, and the landscaping company overlapped the edge of the driveway with the sod. I've bee trying to trim it back with my string trimmer, but the results were less than desirable.
I got my new edger today, and I am astonished at the results! ruler straight edging, 2 1/2" deep and 1/4" wide. PERFECT! . . . and the whole front yard took less than 10 minutes! The edger is very powerful - it easily cut through the sod, deep into the dirt underneath leaving a nice clean edge. My neighbor has a lawncare company, and he was watching me. He came over and said he was going to get one for his jobs, as it is much faster and easier to use.
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Reviewed in the United States on July 21, 2025
★★★★★ 5
Easy to edge with
Size: 8" Edger New
This works great to edge an overgrown area like sidewalk and driveway. Super effective and easy to use.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
GREAT 80v edger (but Kobalt users beware)
Size: 8" Edger Gen1, Size: 8" Edger Gen1
This Greenworks 80v edger is fantastic. I was surprised at how sturdy and rigid the shaft is - much more so than the very much more expensive Stihl Brushcutter I used for years. I like the adjustability of the blade depth and the power is impressive. You will get more run time with higher amp batteries - I have both 2.0 and 2.5 amp batteries, but if you have multiple batteries and chargers (from acquiring multiple tools) you will never be waiting for a battery to charge.
If you have only purchased Greenworks tools, then you are golden. BUT HERE IS THE RUB IF YOU, LIKE ME, THOUGHT THEY WERE STRAIGHT-ACROSS COMPATIBLE WITH THE SAME LINE OF TOOLS THEY MANUFACTURED FOR LOWE'S UNDER THE KOBALT MONIKER AND BLUE COLOR, AS DIFFERENTIATED FROM THEIR STANDARD BRIGHT GREEN.
One of the reasons I went ahead and committed to buying the Kobalt line of 80v yard tools was because Greenworks made them and I figured that it would be a long-lasting and stable design platform, being the same 80v system across two different brands. Then Lowe's dropped the 80v line. I was able to get a few more of their tools for great clearance prices and looked forward to switching over to the complete line of Greenworks 80v tools. was very happy to be able to order their edger because it's the exact same power system - just that all of my gear is Kobalt blue.
AND HERE IS THE DEAL WITH THAT:
They are different. The Kobalt 80v battery will not fit/slide into the Greenworks 80v battery compartment/housing (*as manufactured). - I guess I shouldn't have been surprised - and it could have been Lowe's that required that the stuff made for them specifically would be incompatible. But since it's the same power system, I wondered what the difference was and if I could work-around their obstructionist corporate bs. What I discovered was that the battery compartment on the tools have two long molded channel-guides (male) that match the two long molded (female) channels in the batteries. The vertical placement of the bottom 'rail' in the tool/compartment is positioned in a slightly different spot between the Kobalt and Greenworks 'brands'. But this actually works, because I just used a hand chisel and removed the 'bottom' rail from the Greenworks tool/edger. WA-LA - EUREKA!!! It worked great! It's a great fit, the top rail is more than enough to hold the battery stably in position and the 'lock' mechanism functions perfectly!
I am looking forward to buying more tools in the Greenworks 80 volt line without having to replace all of the Kobalt tools I already paid for AND ESPECIALLY the rediculously expensive batteries...
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Reviewed in the United States on December 29, 2021
★★★★★ 4
Great product that makes edging very fast
Size: 8" Edger New
Edging was quite a job because I had to do it with a hand tool. I have quite a few Greenwork tools, so I decided to purchase the edger. It works great and I am in general happy with it. The three downsides for me are that tool is quite heavy when it also has the battery in it, that the metal blade decreases in size rapidly because of the friction when edging near concrete, and that the wheel is in such a position that I have to bend substantially while the blade does not edge deep enough so that I have to lean the tool on the metal strip at the bottom of the tool.
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Reviewed in the United States on August 17, 2025
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