#  a) Devices 1 sends a uplink payload to LPS8. LPS8 will get the DI1 and DI2 info from the payload

#  a) Devices 1 sends a uplink payload to LPS8. LPS8 will get the DI1 and DI2 info from the payload

#  b) LPS8 will send a message to Device 2 to set the Device2 DO1 = Device1 DI1, and Device DO2 = Device DI2.

#  b) LPS8 will send a message to Device 2 to set the Device2 DO1 = Device1 DI1, and Device DO2 = Device DI2.

#  c) Device2 will change DO1 and DO2 to according to the message from LPS8, and send back a message to LPS8 with the its DO1 and DO2 value. LPS8 will ask Device1 to change its DO1 to same as Device 2, and change the DO2 to the same as Device 2. ( The purpose of this step is to show that the Device2 has already do the change there).  

#  c) Device2 will change DO1 and DO2 to according to the message from LPS8, and send back a message to LPS8 with the its DO1  

#  and DO2 value. LPS8 will ask Device1 to change its DO1 to same as Device 2, and change the DO2 to the same as Device 2.  

#  ( The purpose of this step is to show that the Device2 has already do the change there).  

#  

#  

#  For example: If current status of Device1 and Device2 leds shows:  

#  For example: If current status of Device1 and Device2 leds shows:  

#  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON

#  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON

#  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON

#  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON

#  So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm whether the Device 2 has been changed.  

#  So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm  

#  whether the Device 2 has been changed.  

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