... indicator light: Signal Receipt (RED),Signal Emission (Green) (5.) The Dip Switch 1, code No.1-No.4 for setting up the ... than 2pcs are connected (real time setting available) (6.) The Dip Switch 2, code No.1-No.5 are for setting up ... choosing the working frequency, No.6 is the On-Off switch of the signal receipt and signal emission (ON is for ...