CyberSync Trigger Transmitter CyberSync Trigger Transmitter CyberSync Trigger Transmitter
CyberSync™ Trigger Transmitter
Price: $59.95
Part Number: CST

  • hot shoe-mounted transmitter (used on the camera)
  • wirelessly fires an indefinite number lights on 16 frequencies
  • interference-free wireless control up to 350 feet on 2.4 GHz band
  • works with all CyberSync™ receivers (CSR, CSRB, CSR+, CSRB+ and CSXCV)
  • runs on a replaceable CR2450 lithium coin cell battery
  • 60-Day Absolute Satisfaction Guarantee
  • 2-Year Factory Warranty
The CST Trigger Transmitter mounts on your camera’s hot shoe to provide wireless firing. When your camera shutter is pressed, the CST will simultaneously send the firing signal to all of the flash units in your setup fitted with CyberSync™ receivers.

The CST sends a trigger command to all of the lights in one of the selectable 16 frequencies in the 2.4GHz band, firing any CyberSync™ receiver set to the same frequency. The use of selectable frequencies provides increased integrity in the presence of interference signals over other systems that use a single frequency and merely vary the encoding to determine operating channels or banks.

The CST uses a lithium coin cell CR2450 battery (3VDC, 540mAH) in a convenient slide out tray for easy replacement. Battery life is approximately two years in typical use, without requiring an on/off switch. Inexpensive replacement batteries are commonly available at drug stores such as Walgreens, etc.

If your camera does not have an available hot shoe, the CST can connect to your camera with the supplied sync cord. A test button is provided for firing the system manually.

Physical Dimensions
Cyber Commander™ 2" width x 4.75" height (including antenna) x 0.75" depth
1.5" x 2" LCD screen
CST Transmitter 1" width x 3.25" height x 1" depth
CSR / CSR+ Receivers 2.25" width x 4" height x 1" depth (plus 10” cord)
CSRB Receiver 1.375" width x 4" height x 1.125" depth
CSRB+ Receiver 1.75" width x 4" height x 1.25" depth
CSXCV Transceiver 1" width x 2.75" height x 0.375" depth

System Specifications
System Frequency Range 16 frequencies spaced 2MHz apart, from 2.427GHz to 2.457GHz
System Encoding secure 256-bit binary encoded packet, with validity verification
System Latency 1/4000 typical delay from closing of camera contact to receiver sync output signal
Battery Life - Cyber Commander™ 6.5 to 8.5 hours under normal use with premium alkaline batteries (uses two AAA alkaline or lithium batteries)
Battery Life - CST Transmitter 2 years under normal use (uses lithium coin cell CR2450 battery - 3VDC, 540mAH)
Battery Life - CSRB and CSRB+ approx. 200 hours on-time with premium batteries (uses two AA alkaline or NiMH batteries)
Sync Voltage less than 4VDC at camera with Cyber Commander™ and CST Transmitter; receivers withstand up to 300VDC from a connected flash unit
  • the SC-CST 2.5mm to PC cord
  • a CR2450 coin cell battery
  • your CyberSync instruction manual
With the CyberSync™ system, the CST Trigger Transmitter serves as the transmitter at the camera position. You will need at least one receiver for your setup or you can use one receiver for each light in the setup. With one receiver attached to one light in your setup, any remaining lights will take their cue to fire from their built-in slave trippers. If you will be working in an environment where other photographers and flashes can inadvertently trip your lights, you can use one receiver for each light in the setup. You may also need to use one receiver for each light when working outdoors.

The CST Trigger Transmitter can be used with all CyberSync™ receivers: the CSR and CSRB, the CSR+ and CSRB+ and the CSXCV transceiver (on Einstein™ units). The CST, however, is only designed for triggering and only sends a firing cue to any receiver in the setup.

Note: When used with the CSR+, CSRB+ and CSXCV receivers, no adjustments can be made with the CST. The CST is strictly designed for triggering. Some customers choose to purchase these receivers for use with the CST in order to future-fit their setup should they opt to purchase the Cyber Commander™ at a later date.

The CST Trigger Transmitter may be used in conjunction with the Cyber Commander™. Many photographers wish to use both as this setup allows you to hand hold the Cyber Commander™ for adjustments and easy flashmeter readings while the CST can remain in your camera’s hot shoe for triggering. If the CSR+ or CSRB+ receivers are connected to your lights, all grouping and other functions established by your Cyber Commander™ will be honored when the system is fired from the CST. Please note that the CST will only send a signal to fire and does not adjust flashpower.

Note: CyberSync™ will not fire from Sekonic Meters with the Pocket Wizard Module. These meters can only be fired to or from a Pocket Wizard as the frequencies and coding are proprietary to Pocket Wizard.

Camera Compatibility: The CST base fits standard ISO hot shoes. This is the common hot shoe found on most cameras. If you need to use an adapter they can be found at FlashZebra!. For cameras that cannot establish contact through the use of a hot shoe, the provided SC-CST cord can be used to hardwire connect the unit to your camera’s PC outlet.

For additional questions about compatibility, please contact our customer service team.