Triopo TR-870 E-TTL HSS Master/Slave Flash Speedlite

The TR-870 comes with a manual which is hard to understand. I discovered a few useful procedures through trial and error which I will document here. Note that off-camera wireless links are optical only, this speedlite does not support radio links.

There are 5 buttons which I will label starting from the bottom left:

• Mode
• LED
• Left Clear
• HSS
• Zoom

When you turn on the TR-870, it is in TTL mode. Pushing the MODE button will cycle through:

• M - manual
• Multi
• TTL

If you long-press MODE in Multi mode, you will cycle through:

E-TTL c (Canon) slave mode
I-TTL n (Nikon) slave mode
M/S1
M/S2

In E-TTL c (Canon) slave mode, if you long-press Left Clear, you will enter E-TTL master mode.

In E-TTL master mode, you can press ZOOM and cycle through:

Zoom
CH
RATIO
Flash enable

You can also long-press MODE to go back to slave mode.

When the TR-870 is in Master mode and mounted on my Canon T3i, the camera can see the flash and its configuration but no programming actually works.

When the TR-870 is in Master mode and mounted on my Canon 80D, the camera can see the flash and its configuration but no programming actually works.

When the TR-870 is on-camera in Master mode it doesn't actually work as a master.

As an off-camera E-TTL Slave, the TR-870 works fine.

I also tested it mounted on a Yongnuo YNE3-RX RF slave controlled by a Yongnuo 600EX-RT II and it works fine in this mode as well. You must put it in TTL mode, not E-TTL mode, for it to listen to the YNE3-RX instead of a optical control.