Interfit F121 User manual

F121 Studio Light Instruction
Thank you for purchasing the Interfit F121 flash light with touch screen. It benefits
from several features including; a large power output and built-in regulating circuit,
which can ensure stepless dimming and accurate colour temperature. The output of
the modelling lamp can be adjusted independently or in line with the flash tube
power adjustment. It has fast recycling speed and accurate power adjustments. It
benefits from touch screen controls and can be triggered remotely using the Interfit
on-camera remote INT910 (Sold separately). Please read these instructions before
using the Interfit F121. Thank you.
Function instruction
A. sensor I. power switch
B. beep indicator J. sync socket φ3.5
C. modelling lamp indicator K. decrease power button
D. modelling lamp mode button L. test button
E. flash tube power display M. recycling indicator
F. beep on/off button N. wireless channel/sensor
selection button
G. increase power button O. channel indicator
H. power socket P. sensor indicator
Operation Instructions
1. Please ensure the power switch is in the OFF position before connecting the
power lead. Once connected, change the power switch to ON and the unit will
power up.
2. Once the unit has finished charging, the OK indicator will be lit. Then press the
Test Button [L] to test the flash.

F121 Studio Light Instruction
Thank you for purchasing the Interfit F121 flash light with touch screen. It benefits
from several features including; a large power output and built-in regulating circuit,
which can ensure stepless dimming and accurate colour temperature. The output of
the modelling lamp can be adjusted independently or in line with the flash tube
power adjustment. It has fast recycling speed and accurate power adjustments. It
benefits from touch screen controls and can be triggered remotely using the Interfit
on-camera remote INT910 (Sold separately). Please read these instructions before
using the Interfit F121. Thank you.
Function instruction
A. sensor I. power switch
B. beep indicator J. sync socket φ3.5
C. modelling lamp indicator K. decrease power button
D. modelling lamp mode button L. test button
E. flash tube power display M. recycling indicator
F. beep on/off button N. wireless channel/sensor
selection button
G. increase power button O. channel indicator
H. power socket P. sensor indicator
Operation Instructions
1. Please ensure the power switch is in the OFF position before connecting the
power lead. Once connected, change the power switch to ON and the unit will
power up.
2. Once the unit has finished charging, the OK indicator will be lit. Then press the
Test Button [L] to test the flash.

3. To change the modelling lamp mode press [D], the Prop indicator will light up and
the modelling lamp will be turned on, this indicates that your F121 is in sync
mode and adjusting the power of flash tube will adjust the modelling lamp too.
Press the modelling lamp mode button [D] again, the Prop indicator will turn off,
the Free indicator will be lit and the LED display will be flashing, which indicates
that you are independently adjusting the modelling lamp brightness. If the LED
display stops flickering, this indicates that your F121 has resumed back to flash
power adjustment mode.
To switch the modelling lamp off press the modelling lamp mode button [D]
again, so that the Free indicator and the modelling lamp are both off.
4. To turn the Audio Indicator (beep) on, press the beep on/off button [F], the Audio
Indicator light will be lit. To turn off press the button again and the Audio
Indicator light will turn off
5. Press the Power Up button [G] to increase the power. The maximum power is
7.0.
6. Press the Power Down button [K] to decrease the power. The minimum power is
2.0. At the same time, the flash tube will flash once automatically to discharge
the higher powered flash.
7. To change the wireless mode, press the wireless channel/sensor selection
button [N], the Cell indicator will light up, indicating the sensor flash triggering
function is on; To switch the sensor flash triggering mode off and switch to
wireless channel triggering press the button [N] again so that the first indicator
light is lit (1), this indicates that the first channel is on.
Press the button [N] again, the first indicator will turn off, while the second
indicator will turn on (2), indicating the second channel is on.
Press the button [N] again and the first and second indicator will be lit (1+2),
which means the third channel is on.
Press the button [N] again, both the first and second light will be off, which
means the fourth channel is on.
8. To utilize the wireless features the Interfit on-camera remote SKU: INT910 (Sold
separately) is required.
Important Directions For Use
1. Please connect the power cord to a properly grounded electrical outlet, switch off
the power supply when not in use.
2. To avoid burns or injury, do not touch the reflector and the lamp when in use
since the temperature is very high when on.
3. If the LED displays the error codes E1, E2 or E3 stop using the device
immediately and contact the retailer from who you purchased your unit.
4. To prevent damage to the internal components, the power of the modelling lamp
should not be used above 75w.
5. Do not use in a wet environment.
Wireless channel remote settings
(Interfit on-camera Remote INT910 sold separately)
Technical data
Specification 100WS 200WS
Guide No. GN28 GN42
100% recycling time 1-2S
Flash adjustable rate 2.0-7.0
Modelling lamp power 75W
Colour temperature 5600˚K ± 200˚K
Triggering mode Wireless，Light sensor sync，Sync cord
Trigger voltage 5.6V
Sensor sync distance ≥10M
Working voltage 220V/50Hz or 120V/60Hz
Battery required:
A23/MN21/LRV08

3. To change the modelling lamp mode press [D], the Prop indicator will light up and
the modelling lamp will be turned on, this indicates that your F121 is in sync
mode and adjusting the power of flash tube will adjust the modelling lamp too.
Press the modelling lamp mode button [D] again, the Prop indicator will turn off,
the Free indicator will be lit and the LED display will be flashing, which indicates
that you are independently adjusting the modelling lamp brightness. If the LED
display stops flickering, this indicates that your F121 has resumed back to flash
power adjustment mode.
To switch the modelling lamp off press the modelling lamp mode button [D]
again, so that the Free indicator and the modelling lamp are both off.
4. To turn the Audio Indicator (beep) on, press the beep on/off button [F], the Audio
Indicator light will be lit. To turn off press the button again and the Audio
Indicator light will turn off
5. Press the Power Up button [G] to increase the power. The maximum power is
7.0.
6. Press the Power Down button [K] to decrease the power. The minimum power is
2.0. At the same time, the flash tube will flash once automatically to discharge
the higher powered flash.
7. To change the wireless mode, press the wireless channel/sensor selection
button [N], the Cell indicator will light up, indicating the sensor flash triggering
function is on; To switch the sensor flash triggering mode off and switch to
wireless channel triggering press the button [N] again so that the first indicator
light is lit (1), this indicates that the first channel is on.
Press the button [N] again, the first indicator will turn off, while the second
indicator will turn on (2), indicating the second channel is on.
Press the button [N] again and the first and second indicator will be lit (1+2),
which means the third channel is on.
Press the button [N] again, both the first and second light will be off, which
means the fourth channel is on.
8. To utilize the wireless features the Interfit on-camera remote SKU: INT910 (Sold
separately) is required.
Important Directions For Use
1. Please connect the power cord to a properly grounded electrical outlet, switch off
the power supply when not in use.
2. To avoid burns or injury, do not touch the reflector and the lamp when in use
since the temperature is very high when on.
3. If the LED displays the error codes E1, E2 or E3 stop using the device
immediately and contact the retailer from who you purchased your unit.
4. To prevent damage to the internal components, the power of the modelling lamp
should not be used above 75w.
5. Do not use in a wet environment.
Wireless channel remote settings
(Interfit on-camera Remote INT910 sold separately)
Technical data
Specification 100WS 200WS
Guide No. GN28 GN42
100% recycling time 1-2S
Flash adjustable rate 2.0-7.0
Modelling lamp power 75W
Colour temperature 5600˚K ± 200˚K
Triggering mode Wireless，Light sensor sync，Sync cord
Trigger voltage 5.6V
Sensor sync distance ≥10M
Working voltage 220V/50Hz or 120V/60Hz
Battery required:
A23/MN21/LRV08