"error": 4002

eWeLink App
1

I try create a test application for EweLink.
I used Postman and everything matches the description until the moment
I want to change the state of the switch using

https://eu-apia.coolkit.cc/v2/device/thing/status ,

everything is set up the same as in all previous POSTs, but it returns me :

“error”: 4002,

“msg”: “提供的天的”,

“data”: {}

Can you please advise me what I’m doing wrong?

2

Error code 4002 may indicate one of the following issues:

  1. Device is offline
  2. Parameters not following the device protocol

Please check the following:

  1. Confirm device connectivity status
  2. Verify parameter formatting complies with the device protocol specifications
3
  1. Device is online, I can change status by using EweLink, result is OK
  2. Parameters in Body is:
    {
    “type”:1,
    “id”:“100243c417”,
    “params”:{
    “switch”:“off”
    }

}
Headers is same as v2/device/thing
I don’t know what I can reapair.

4

The protocol of this device is multi-channel protocol, so you should pass the parameter control like this, you can try：
“params”:{
“switches”: [
{
“switch”: “off”,
“outlet”: 0
},
{
“switch”: “off”,
“outlet”: 1
},
{
“switch”: “off”,
“outlet”: 2
},
{
“switch”: “off”,
“outlet”: 3
}
]
}

5

Thank you, now is all OK. Again thanks.