you must configure the udp in node. Split node divides the incoming data/string in chuncks, leaving out the & symbols. Which sensor? node gets the substring before every “=” symbol, compares its value with the known IDs and divides the flow for every sensor_ID. Entity node gets the substring after the “=” symbol, which is the value of every sensor, and sets it to the corresponding ID. You will want to set the appropiate name for every sensor whithin every entity node, that’s the name the sensor will display in HA.
[{"id":"9274c290.7fdd7","type":"split","z":"937ef78.ec6b408","name":"","splt":"&","spltType":"str","arraySplt":1,"arraySpltType":"len","stream":false,"addname":"","x":290,"y":2240,"wires":[["302749a.72287b6"]]},{"id":"302749a.72287b6","type":"switch","z":"937ef78.ec6b408","name":"Which sensor?","property":"$substringBefore(payload,\"=\")","propertyType":"jsonata","rules":[{"t":"eq","v":"0B0014EF523A01C0","vt":"str"},{"t":"eq","v":"0B0014EF523A00C4","vt":"str"},{"t":"eq","v":"EB3314EF523A01C5","vt":"str"},{"t":"eq","v":"13EF14EF523A00C5","vt":"str"}],"checkall":"true","repair":false,"outputs":4,"x":460,"y":2240,"wires":[["d23c5abe.6df0a8"],["bbf3a3da.dfd57"],["432b4736.879fa8"],["41ca9572.e2512c"]]},{"id":"d23c5abe.6df0a8","type":"ha-entity","z":"937ef78.ec6b408","name":"sensor1","server":"9405c3fe.d0a6c","version":1,"debugenabled":false,"outputs":1,"entityType":"sensor","config":[{"property":"name","value":"sensor1"},{"property":"device_class","value":""},{"property":"icon","value":""},{"property":"unit_of_measurement","value":""}],"state":"$substringAfter(payload,\"=\")","stateType":"jsonata","attributes":[],"resend":true,"outputLocation":"","outputLocationType":"none","inputOverride":"allow","outputOnStateChange":false,"outputPayload":"$entity().state ? \"on\": \"off\"","outputPayloadType":"jsonata","x":680,"y":2180,"wires":[[]]},{"id":"bbf3a3da.dfd57","type":"ha-entity","z":"937ef78.ec6b408","name":"sensor2","server":"9405c3fe.d0a6c","version":1,"debugenabled":false,"outputs":1,"entityType":"sensor","config":[{"property":"name","value":"sensor2"},{"property":"device_class","value":""},{"property":"icon","value":""},{"property":"unit_of_measurement","value":""}],"state":"$substringAfter(payload,\"=\")","stateType":"jsonata","attributes":[],"resend":true,"outputLocation":"","outputLocationType":"none","inputOverride":"allow","outputOnStateChange":false,"outputPayload":"$entity().state ? \"on\": \"off\"","outputPayloadType":"jsonata","x":680,"y":2220,"wires":[[]]},{"id":"432b4736.879fa8","type":"ha-entity","z":"937ef78.ec6b408","name":"sensor3","server":"9405c3fe.d0a6c","version":1,"debugenabled":false,"outputs":1,"entityType":"sensor","config":[{"property":"name","value":"sensor3"},{"property":"device_class","value":""},{"property":"icon","value":""},{"property":"unit_of_measurement","value":""}],"state":"$substringAfter(payload,\"=\")","stateType":"jsonata","attributes":[],"resend":true,"outputLocation":"","outputLocationType":"none","inputOverride":"allow","outputOnStateChange":false,"outputPayload":"$entity().state ? \"on\": \"off\"","outputPayloadType":"jsonata","x":680,"y":2260,"wires":[[]]},{"id":"41ca9572.e2512c","type":"ha-entity","z":"937ef78.ec6b408","name":"sensor4","server":"9405c3fe.d0a6c","version":1,"debugenabled":false,"outputs":1,"entityType":"sensor","config":[{"property":"name","value":"sensor4"},{"property":"device_class","value":""},{"property":"icon","value":""},{"property":"unit_of_measurement","value":""}],"state":"$substringAfter(payload,\"=\")","stateType":"jsonata","attributes":[],"resend":true,"outputLocation":"","outputLocationType":"none","inputOverride":"allow","outputOnStateChange":false,"outputPayload":"$entity().state ? \"on\": \"off\"","outputPayloadType":"jsonata","x":680,"y":2300,"wires":[[]]},{"id":"878d793f.5afbf8","type":"udp in","z":"937ef78.ec6b408","name":"","iface":"","port":"","ipv":"udp4","multicast":"false","group":"","datatype":"buffer","x":150,"y":2240,"wires":[["9274c290.7fdd7"]]},{"id":"9405c3fe.d0a6c","type":"server","name":"Home Assistant","version":2,"addon":true,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open","connectionDelay":true,"cacheJson":true,"heartbeat":false,"heartbeatInterval":30}]
