The Multi-Trigger 3 (MT3) is an upgrade from the Multi-Trigger 2. Improvements include greater ease of use, an additional 4 outputs on the lid of the box for camera and flash, elimination of the focus/review switches for the camera shutter, pulse outputs for diagnostic purposes, and a label designed specifically for the MT3. The MT3 has all the same functions as the previous model. These include:
all components hard-wired for durability
operates either on a 9V battery or an optional 120-240 VAC to 9 VDC adapter
LEDs to indicate power on, photogate alignment, and event triggering
test button to produce output pulses without a sensor cable connected
inputs for microphone and photogate sensors as well as external triggers
selector for microphone or photogate input
fine (up to 0.05 s) and coarse (up to 0.5 s) delay adjustments
selector for one of two delay ranges (0 to 0.5 s or 0 to 0.05 s)
continously-variable timeout setting up to 1 s
instant and delayed optically-isolated outputs
The MT3 kit includes all the parts for the (i) control box, (ii) the microphone cable, and (iii) one of the two types of photogate cable. The MT3i version of the kit includes parts for the interrupter-type photogate. This is version you would choose if you were, for example, using the MT3 in conjunction with the AstroSplash Drop Controller to capture drop collisions. If, on the other hand, you need a photogate cable with variable width for larger objects, you would select the MT3v version.
If you want both types of photogate cable, you can order the second type from the MT3 accessories page. Also see the accessories page to order the optional 9V AC/DC adapter.
The Multi-Trigger 3 kit with control box and sensor cables requires assembly. Experience in wiring, soldering, and troubleshooting electrical circuits is assumed. Here are the assembly instructions.
Select below the version with the photogate that you prefer.
What else is needed
In order to trigger a flash unit or wireless transceiver, select a flash trigger cable kit.
In order to trigger a camera shutter, select the shutter cable for your camera.
See below for options.
Flash Trigger Cable Kit (3.5mm type)
This kit is for preparing a cable to connect the flash output of the Multi-Trigger 3 to a PC jack. The kit includes a PC-type connector for the flash, a 3.5mm mono plug, 3-ft of 2-conductor cable, and heat-shrink tubing. Assembly is required. If your flash unit doesn't have a PC jack but does have a hot shoe, the hot shoe adapter shown to the right can be used together with a flash trigger cable for flash triggering.
If your flash unit is one of the Vivitar models 283, 285HV, or 3700, you'll need a Vivitar PC-1 cord to connect to your flash unit. Click here for one possible source. If you're triggering your flash wirelessly or your flash unit has a 3.5mm synch jack, see this page for 3.5mm cables.
PC cable kit with 3.5mm plug,
unassembled - $4.95
PC flash trigger cable,
Select a flash cable kit $4.95), a hot shoe adapter ($9.95), or a combination of flash cable kit ($13.90). The latter combination saves you $1 over purchasing the items separately.
We provide shutter cables for most camera makes/models for use with our triggers. When you order a shutter cable, we include a 6-ft extension cable as well as an adapter, if needed, to convert the cable for use with the 3.5mm stereo jack on our triggers.
Select your camera make/model below and note the corresponding ID. If you don't find your model listed, compare the socket on your camera to the photos below. The photos will enlarge by clicking on them. If you are still unable to determine the type of plug that you need, please contact us. If you already have a shutter release and want to convert it for use with our triggers, this page may help.
All shutter cables, which include extension cords and adapters (if needed), are $12.95.
Canon EOS Rebel
series, T/X series, EOS 60D, 70D, 100D, 300D, 350D, 400D, 450D, 500D,
550D, 1000D, Powershot G series; Pentax K10D, K20D, K3, K5, K7
Canon EOS 5D Mark II/III, 10D,
20D, 30D, 40D, 50D, D30, D60, 5D/6D/7D, 1D/1DX, 1D/1DS Mark III,
1D Mark III, 1D Mark IV