Remote Control System Apply for Device Controlling another Device for Long Range Communication

2S1XL-DC12+CB-2V+CB-2
When you want to remote control a device which is far away(no line of sight, lots of trees or other obstacles in-between), maybe you want to use some indication to verify whether the controlled device work or not. what should you do?

Here we made presentation to solve this problem.
Prepare two set of remote control.
S1XL-DC12+CB-2V (CB-2V is triggered by DC power 5~28V input)
S1XL-DC12+CB-2
We have a wired remote transmitter at the first receiver that it will remotely turn on a lamp at
the second receiver near the wireless transmitter.
We can get feedback through red lamp to verify whether the controlled device (Blue lamp) is working or not.