• Alarm Notifications: Write custom functions that raise specific alarms for a device, asset, or location. These alarm notifications can be triggered automatically based on data received in the application.
  

• Data Operations: Perform operations like Add, Update, or Delete on your data whenever a specific event occurs.
  

• Message Handling Use custom functions to transform incoming data before it is processed or displayed.
  
  
• Integration with External APIs: Write custom functions to connect Zoho IoT with external APIs, allowing your IoT solution to interact with other platforms and services, enhancing its capabilities.
  

Example of a custom function

response = Map();
// token = arguments.get('key').get('token');
res = invokeurl
[
 url :"https://api.weatherapi.com/v1/current.json?key=364bab7e13751a01121d55
r41306&q=palladam&aqi=yes"
 type :GET
 detailed:true
];
res_1 = invokeurl
[
 url :"https://api.weatherapi.com/v1/current.json?key=364bab67e13471a0112de3
d241306&q=chennai&aqi=yes"
 type :GET
 detailed:true
];
if(res.get("responseCode") == 200 && res_1.get("responseCode") == 200)
{
 resText = res.get("responseText");
 resText1 = res_1.get("responseText");
 response.put("palladam",resText);

Using Custom Functions 

1. Understanding devices