It is 2.4G TrigMaster Receiver, a part of our item ″2.4G TrigMaster Versatile Trigger for Nikon″, and can not use separately. So, be sure that you have already got the whole kit first! Several flash units work together helps increase brightness, fill in shadows and improve the evenness of lighting. So, that's very useful to get more extra receivers if there were several flashguns! With different channels, the photographer can trigger different flashguns in different angle. Compatible with all Nikon Flashgun and camera
Kind note: This receiver must be used with our Trigmaster,The sku in our store is MX1N/MX2N/MX3N . It's no use to buy only one receiver .
In above picture, only Trigmaster receiver included.
It works fine.
It is a pitty, that it is too hard to buy (most of the time out fo stock...)
Good product, works very well within a reasonable range (100m) and very reliable. make sure that you have a 2.4G trigger before buying one