$ curl http://localhost:59881/api/v2/device -H "Content-Type:application/json" -X POST \
  -d '[
        {
            "apiVersion": "v2",
            "device": {
               "name" :"Modbus-TCP-Temperature-Sensor",
               "description":"This device is a product for monitoring the temperature via the ethernet",
               "labels":[ 
                  "Temperature",
                  "Modbus TCP"
               ],
               "serviceName": "device-modbus",
               "profileName": "Ethernet-Temperature-Sensor",
               "protocols":{
                  "modbus-tcp":{
                     "Address" : "172.17.0.1",
                     "Port" : "502",
                     "UnitID" : "1",
                     "Timeout" : "5",
                     "IdleTimeout" : "5"
                  }
               },
               "autoEvents":[ 
                  { 
                     "Interval":"30s",
                     "onChange":false,
                     "SourceName":"Temperature"
                  }
               ],
               "adminState":"UNLOCKED",
               "operatingState":"UP"
            }
        }
    ]'

$ curl http://192.168.3.45:59882/api/v2/device/name/Modbus-TCP-Temperature-Sensor/AlarmThreshold \
    -H "Content-Type:application/json" -X PUT  \
    -d '{"ThermostatL":"15","ThermostatH":"100"}'

$ curl http://localhost:59882/api/v2/device/name/Modbus-TCP-Temperature-Sensor/AlarmThreshold | json_pp

{
   "statusCode" : 200,
   "apiVersion" : "v2",
   "event" : {
      "origin" : 1624324686964377495,
      "deviceName" : "Modbus-TCP-Temperature-Sensor",
      "id" : "f3d44a0f-d2c3-4ef6-9441-ad6b1bfb8a9e",
      "sourceName" : "AlarmThreshold",
      "readings" : [
         {
            "resourceName" : "ThermostatL",
            "value" : "1.500000e+01",
            "deviceName" : "Modbus-TCP-Temperature-Sensor",
            "id" : "9aa879a0-c184-476b-8124-34d35a2a51f3",
            "valueType" : "Float32",
            "mediaType" : "",
            "binaryValue" : null,
            "origin" : 1624324686963970614,
            "profileName" : "Ethernet-Temperature-Sensor"
         },
         {
            "value" : "1.000000e+02",
            "resourceName" : "ThermostatH",
            "deviceName" : "Modbus-TCP-Temperature-Sensor",
            "id" : "bf7df23b-4338-4b93-a8bd-7abd5e848379",
            "valueType" : "Float32",
            "mediaType" : "",
            "binaryValue" : null,
            "origin" : 1624324686964343768,
            "profileName" : "Ethernet-Temperature-Sensor"
         }
      ],
      "apiVersion" : "v2",
      "profileName" : "Ethernet-Temperature-Sensor"
   }
}