You can send several values with the same timestamp. This helps reduce data upload costs and create scripts with lower ROM memory usage. Use the global timestamp as follows:

Topic:

/v2.0/devices/<device_label>

Field	Value	Required
Host	industrial.api.ubidots.com	Yes
Port	1883/8883 (Non-TLS/TLS)	Yes
Username	Your Ubidots Token	Yes
Password	Any character or leave blank	No
Quality of Service	0 or 1	No

Payload structure:

{
  "temperature": 10,
  "humidity": 90,
  "pressure": 78,
  "timestamp": 1634311791000
}

{
  "temperature": {
    "value": 10,
    "timestamp": 1634378596000,
    "context": {
      "status": "cold"
    }
  },
  "humidity": {
    "value": 90,
    "context": {
      "status": "High humidity"
    }
  },
  "pressure": {
    "value": 78,
    "context": {
      "status": "Normal"
    }
  },
  "timestamp": 1634311791000
}

🚧
timestamp hierarchy
If a timestamp is provided within a Dot, it overrides the global timestamp and uses the provided timestamp instead. For example, the temperature variable receives a value of 10 with the timestamp 1634378596000 instead of the global timestamp 1634311791000.

Example

📘
The Bash examples in this section use the Eclipse Mosquitto library. To test them, install it by following the official instructions.

Send data to multiple Variables with a global timestamp
Update multiple variables with a global timestamp that applies to all values.

$ mosquitto_pub \
-h 'industrial.api.ubidots.com' \
-t '/v2.0/devices/weather-station' \
-u 'BBFF-Rfcgaxns6HlVb155WA0RhSY85xNDmB' \
-p 1883 \
-q 1 \
-m '{
  "temperature": 10,
  "humidity": 90,
  "pressure": 78,
  "timestamp": 1634311791000
}'

Send data to multiple Variables with a global timestamp
Update multiple variables with a global timestamp that applies to all Dots.

$ mosquitto_pub \
-h 'industrial.api.ubidots.com' \
-t '/v2.0/devices/weather-station' \
-u 'BBFF-Rfcgaxns6HlVb155WA0RhSY85xNDmB' \
-p 1883 \
-q 1 \
-m '{
  "temperature": {
    "value": 10,
    "timestamp": 1634378596000,
    "context": {
      "status": "cold"
    }
  },
  "humidity": {
    "value": 90,
    "context": {
      "status": "High humidity"
    }
  },
  "pressure": {
    "value": 78,
    "context": {
      "status": "Normal"
    }
  },
  "timestamp": 1634311791000
}'