Spread c-600 is the company's own R & D and production of a superior to F21-E1B industrial remote control. The C-600 can be used in all kinds of operation of crane stone mechanical lifting platform under all kinds of bad environment. The C-600 is absolutely waterproof, dustproof, drop proof and pressure proof. The C-600 is suitable for F21-E1B receiver, the external antenna is installed outside the electronic control box to enhance the signal up to 100 meters, and the text of the transmitter keys can be customized.