User's Manual

4. The operation function of Relay Node
If the mesh packet message can not be propagated to far distance Gateway
Node. A Relay Node is necessary to be used between mesh node and
gateway node for the purpose of message long distance propagation.
When relay node receive a mesh packet message with a same group and
device address, it will lit on green LED light shortly and send this message to
the other mesh node, relay node or gateway node repeatedly.
Since relay node is also located on the higher position, the high capacity
battery or using AC adaptor is to supply power to relay node. It is noted that
this mesh node is without battery charging function