1. This product includes two sides: MZ11-06A300-600RM,MZ11-06A500-800RM

2.This product is transformed from the Distance ControlInterchange to protect the 485 communicate export.

3.When contacted in the circle, the product is helpful toprovent the damages of accident or human, and it can also help toprevent the effection of thunder.

4. If you are interested in our products. please call me:0755-28769200. Cielo. Waiting to coperate with youcan make a new future.