2 model 4i receivers and 2 transmitters on frequency block D

2 model 4 receivers and 2 transmitters also on frequency block D

The model 4i and model 4 units function seamlessly together.

Each block supports 4 channels, for a total of 8 independent channels.

I used to use them for 2 or 3 different concurrent portrait setups within a close area.

They may be used for triggering not only strobe lights, but also cameras or anything else that can use a momentary contact closure.

These are showing signs of use, have scuffs, scratches, velcro and tape residue and dust, see photos.

All tested functional, and the battery compartments look to be free of corrosion.

They are sold AS-IS, see photos.

 Auction includes just what is pictured, nothing more.