Broncolor Siros 800 S WiFi / RFS 2 Operating Instructions
The following operating instructions for the Broncolor Siros 800 S are a reproduction of the official materials from the manufacturer for quick reference by PhotoRobot customers. These materials aim to support the initial understanding and independent operation of their Broncolor Siros 800 S device. Although, be aware that Broncolor lights are managed directly in PhotoRobot _Controls App. This ensures there is no need to install drivers for Broncolor hardware management on the customer side.
For the technical information on hardware components, software tools, principle modes, and recommended settings for Broncolor lights with PhotoRobot, refer to PhotoRobot – Broncolor Lights Management.

Note: These operating instructions are a reproduction of the official operating instructions by the manufacturer for the Broncolor Siros 8 S series studio lights. Refer to the manufacturer’s website broncolor.swiss for the original documentation on your specific product. At the same time, be sure to observe any instructions provided specifically with your device before its first use.
Controls and Displays
The controls and displays for the Broncolor Siros 800 S are as follows.


- Modelling Light On/ Off
- Rotary Controller
- WiFi Display
- Digital Power Distribution Display
- “test” key
- Menu Settings
- Menu Settings
- Menu Settings
- Menu Settings
- Menu Settings
- Menu Settings
- Menu Settings
- Menu Settings
- Handle
- Sync Socket
- Mini USB
- Mains Switch
Before Use
The Broncolor Siros S is a high-quality product that provides years of service if used properly. Be sure to carefully read all information within these operating instructions, which also contain important instructions for use and maintenance of the appliance. Refer further users to these instructions to familiarize new users with the device, its use and its maintenance. Additionally, always observe the safety instructions provided separately for your device from Broncolor.
Table of Contents
- Scope of Supply
- First Start-up
- Control Elements
- Overview of Main Menu Functions
- Menu Navigation
- Controlling Flash Times
- Release
- HS Function
- Special Functions
- Information and Fault Messages
- FAQs
- Accessories
- Maintenance / Repairs
- Environmental Protection Information
- Guarantee and Notice for UK customers
- Technical Data
1. Scope of Supply
1.1. Siros 800 S WiFi / RFS 2 – 31.643.XX
First, ensure that you have received the following items in the delivery.

- Siros S Monolight
- Mains Cable
- Operating Instructions (BA109.00)
- Important Safety Instructions (WA-18-1)
1.2. Kits
Siros Expert Kit contents include:
- 2× Siros 800 S WiFi / RFS 2
- 1× Umbrella, 85 cm (33.574.00)
- 1× Softbox 60 x 60 (33.561.00)
- 1× Speed Ring (33.401.00)
- 2× Junior Stand AC (35.100.00)
- 1× Flash Bag 2 (36.532.00)
- 1× Accessory Bag (36.535.00)
- 1× Sync Cable (34.111.00)
Siros Pro Kit contents include:
- 3× Siros 800 S WiFi / RFS 2
- 1× Softbox 60 x 60 (33.561.00)
- 1× Octabox 75 (33.600.00)
- 2× Speed Ring (33.401.00)
- 2× L40 Standard Reflector (33.115.00)
- 3× Junior Stand AC (35.100.00)
- 1× Flash Bag 3 (36.533.00)
- 1× Accessory Bag (36.535.00)
- 1× Sync Cable (34.111.00)
2. First Start-Up
2.1. Remove Protective Cover

2.2. Plug in Mains Cable

2.3. Switch the Unit ON at the Main Switch

3. Control Elements
3.1. Element Functions
Rotary Controller (2)

- The rotary controller (2) functions to switch the unit on and off (stand-by mode). Pressing the rotary controller for 3 seconds switches the unit to stand-by.
- In the menu, the rotary controller enables menu navigation and confirmation of menu items. There is further explanation of menu navigation in chapter 5.
- In operation, the rotary controller changes the flash energy. Turning counter-clockwise reduces the flash energy, while turning clockwise increases it. Meanwhile, turning the controller slowly changes it in 1/10 f-stop steps, and turning fast (“twisting”) in 1/1 f-stop steps.
Info Display (4)

- The info display (4) shows the flash energy selected, or the menu selection options.
Mod - Modeling Light ON / OFF (1)

- Use the “mod” (1) to switch the modeling light on or off. A longer press of the button changes the operating mode from “full” to “prop” or vice versa.
Test (5)

- Using “test” (5) will begin a test. The “Ready” display around the rotary controller changes to blue as soon as the charge / discharge operation has been completed.
3.2. Menu Functions
Speed (13)

- The “speed” (13) menu setting is for fast charging and flash times. Find further explanation in chapter 6 of these operating instructions.
WiFi (12)

- “WiFi” (12) indicates whether the WiFi is switched on or off.
HS (11)

- “HS” indicates whether HS is on or off.
Studio / Channel (10)

- The menu setting “st / ch” (10) is for changing the studio / channel. Use it to switch the current studio channel (RFS 2).
Lamp (9)

- Use the menu setting lamp (9) to select the lamp channel (RFS 2).
Sequence (8)

- The “seq” (8) menu setting selects the number of flashes.
Beep (7)

- The “beep” (7) menu function shows if the acoustic “Ready” warning is switched on or off.
Sync (6)

- Using “sync” (6) permits the selection of different methods of release (photocell, radio, photocell, and / or radio).
Sync Socket / Mini USB (15 / 16)

- Use the menu functions Sync socket / Mini USB (15 / 16) for release via the sync cable, or software update via mini USB.
On / Off (17)

- Use on / off (17) on the unit to switch it on or off.
4. Overview of Main Functions
The main functions are as follows.
- To enter the main menu, press the rotary controller (2).
- Turn the rotary controller (2) clockwise or counter-clockwise to reach the required menu item.
- To confirm your selection, press the rotary controller (2) again. The selected menu item starts to blink.
5. Menu Navigation
Menu functions of the Broncolor Siros 800 S include:
- speed
- WiFi
- HS
- st/ch
- lamp
- seq
- beep
- sync
After pressing the rotary controller (2), you enter the main menu of the monolight. From there, you have access to the various functions.
Please note: If a menu item cannot be selected, such as with products other than the Siros 800 S, the unit does not support that function.
Example: Set a sequence of 15 flashes per release.

- Press the rotary controller (2) to enter the main menu. The menu item last selected will be displayed. The main display changes from showing the output power to the selected menu item.
- Turn the rotary controller (2) until you reach the menu item "seq".
- Press the rotary controller (2) to confirm this function. The "seq" display begins to blink.
- Turn the rotary controller (2) until "15" appears in the main display.
- Confirm this selection by pressing the rotary controller (2). After this confirmation, the unit switches to its normal state. If the selection is not confirmed within 5 seconds, the unit switches to its normal state without changing its setting.
6. Controlling Flash Times
In the main menu you can set the flash time of the monolight to "speed". This setting calculates the fastest possible flash time for the chosen energy level. This also may cause the flash color to shift slightly towards the blue region.

- Press the rotary controller (2) to enter the main menu.
- Turn the rotary controller (2) until you reach the menu item "speed".
- Confirm this selection by pressing the rotary controller (2).
- Use the rotary controller (2) to select the option "on" or "off".
- Confirm this with the rotary controller (2).
7. Release
7.1. RFS 2 Module (Radio Frequency System)
For RFS 2 flash control, the channel (studio address) must correspond to the transmitter’s channel. The studio address is set in the menu at position "st". The lamp channel is defined in the menu under "lamp". Refer to section 9.3 for more information about changing the colors of the cognition lights.
With the radio transceiver, you can define and set the individual lamps as you wish. To learn how to do this, please see the operating instructions for the transceiver. The transceiver is not standardly included with individual heads.
7.2. Photocell (Cell)
The photocell can be switched on and off using the menu function "sync" (6). When this is active, the blue LED next to the "cell" label is illuminated. After the first flash of a sequence, the active photocell is deactivated, and the blue LED beside the "sync" key (6) blinks. Pressing the "test" key switches it on again.
7.3. Sync Socket (15)
The sync cables – 5m (16.4ft) (Art. No. 34.111.00) and 10m (32.8ft) (34.112.00) – can be fitted to the socket for cable release (15).
7.4. "test" Key (5)
Using this key, the monolight can be triggered manually. The flash can be triggered as soon as 70% of the set energy level is reached. The visual "Ready" indicator, on the other hand, only illuminates when 100% is attained.
8. HS Function
In combination with the RFS 2.2 transmitter, you can use the Siros 800 S monolight with extremely fast shutter speeds. For example, with ambient light, even with the aperture wide open (selective focus), the image can be underexposed correctly with up to 1/8000s, and Siros still lets you set dominant and creative light effects.
All you need for this is the RFS 2.2 transmitter, which is available for Canon, Fuji, Nikon and Sony cameras. In addition, HS must be activated on all Siros units. This modifies the flash curve and guarantees, in combination with RFS 2.2, correct exposure with no limits on your choice of shutter speed.
Please read the operating instructions for the RFS 2.2 transmitter to learn more about optimum use of the HS function.
While working in HS mode, you are only able to use flash power level 4 to 10 with Siros.
9. Special Functions
9.1. Reset (to Factory Settings)
Press the "test" key (5) for 4 seconds. This resets all functions to the factory settings. Resetting is acknowledged by a double beep.
9.2. "bronControl" App and WiFi Settings
To control your Siros monolight, you can also download the "bronControl" app free of charge. To find the app, search for "bronControl" in Apple’s App Store, or in Google’s Play Store.
9.2.1. Operating Modes
9.2.1.1. Operation in "Private" Mode (Factory Setting)
If the WiFi mode is activated on more than one monolight, these units all link up automatically with the same studio address to form a private network. A smartphone or tablet must then be connected to this network in order to control it. To use this, activate the WiFi function on your smartphone or tablet. Your device will then automatically search for available WiFi networks. Connect your smartphone or tablet to the appropriate Bron-Studio network. The connection password is: bronControl. Now start the "bronControl" app on your device. Add the appropriate studio number under "add new studio" and connect the app with this studio. For further instructions about operation, please use the help function "?" in the app.
9.2.1.2. Operation in "Enterprise" Mode
If there is an existing WiFi network (router), the unit can be integrated into this network using a smartphone or tablet. To achieve this, in the "bronControl" app, under settings, go to "Network Settings" and enter your router’s settings in "enterprise" mode. Make sure the units are set to the correct studio address. Siros saves the last type of connection and tries to connect to the last network the next time it starts.
9.2.2. Menu Settings
The menu settings are defined as follows for: on / off / sync (on / -- / sy).
9.2.3. WiFi Display (3) on Unit
The symbols and their descriptions for the Wifi display (3) on the unit are as follows.
9.3. Cognition Lights
When the various lamp channels are selected (zones), the cognition light on the top surface of the unit changes color. The purpose of this is to differentiate between individual units when they are controlled by the "bronControl" app. The light on the unit changes color when the app is activated on a smartphone or tablet or when the rotary controller on the unit is pressed; it changes back to blue on leaving the menu.
The lamp channel colors are as follows.
10. Information and Fault Messages*
10.1. Acoustic Signals
The acoustic signals are a beep sound or a double-beep.
10.2. Message in Display
Note: *Error messages are always also indicated by the red cognition light.
11. FAQs
11.1. Changing Flash Tubes

- Disconnect the mains cable from the unit.
- Remove the safety glass by pulling it out of its retaining clips.
- Press the contact spring downwards and pull the flash tube out carefully.
11.2. Changing the Fuse

- Disconnect the mains cable from the unit (see picture 1 above). Open the fuse compartment beneath the unit.
- Prise the blown fuse carefully out with a pointed object.
- Insert the replacement fuse and close the fuse compartment again
11.3. Changing Light Shapers

- Turn the light shaper in either direction to its stop.
- Pull the release backwards and, at the same time, turn the light shaper until it is free of the bayonet fitting.
- Remove the light shaper carefully to the front. Take care not to damage the safety glass.
11.4. Mounting an Umbrella
To mount the umbrella, mount it in the opening provided beneath the unit.

12. Accessories
Siros is compatible with the entire range of broncolor light shapers.
The following items represent specially recommended accessories:
13. Maintenance and Repairs
Your broncolor monolight is a precision instrument, able to provide years of trouble-free operation when treated with appropriate care. However, should a fault occur, please do not try to open the unit and repair it yourself. Even when the unit is switched off, there may still be dangerous levels of voltage inside it. Therefore, for maintenance and repairs, always send the unit to your Broncolor service point.
14. Environmental Protection Information
At the end of its useful life, this product may not be disposed of as normal household waste. Instead, it must be taken to a collection point for the recycling of electrical and electronic appliances. The materials are recyclable according to their markings. By re-use, recycling or other forms of using old appliances, you are making an important contribution to the protection of our environment.
Please ask your local authorities or a Broncolor sales partner for the appropriate disposal point.
15. Guarantee
All broncolor power packs, lamps, monolights and accessories are built to a high quality standard. Broncolor offers a two-year factory guarantee from the date of purchase (for the first owner) on the above broncolor products. Excluded from this guarantee are flash tubes, halogen lamps, safety glasses, cables, batteries and textiles. Faults resulting from non-observance of safety instructions, incorrect handling, use of accessories from another manufacturer, unauthorised intervention or modification are excluded from the factory guarantee. Broncolor / PhotoRobot assumes no liability for damage resulting from non-observance of safety instructions, incorrect handling, use of accessories from another manufacturer or unauthorized intervention or modification. In the event of technical problems, please contact the nearest authorised Broncolor service station immediately. Article numbers, product descriptions and the scope of supply can vary from one country to another. For more detailed information, please contact your Broncolor sales partner. Errors and misprints excepted.
16. Notice for UK Customers
This device can be configured to connect to a wireless LAN network. Please configure this product to connect to secured infrastructure. Do not use the configuration mode for normal operation.
- Reports about Security Vulnerabilities: support@broncolor.swiss
- Reaction time: 30 days
- UK Defined Support Period: 2 years after date of sale, only applicable to products sold in the UK (except Northern Ireland) on or after April 29th, 2024
- Manufacturer’s name: Bron Elektronik AG
- Manufacturer’s address: Hagmattstrasse 7, 4123 Allschwil, Switzerland
17. Technical Data

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