---
title: "Send downlink"
method: POST
path: "/api/devices/{id}/downlinks"
tags: ["Device"]
---

# Send downlink

`POST /api/devices/{id}/downlinks`

Send a unicast downlink to one device

## Request body

- object
  - `fCnt` integer, required — Application's downlink frame counter
  - `fPort` integer, required — The intended port for LoRa devices
  - `data` string — Any string to send as data to the device
  - `jsonData` object — A JSON object to send to the device

## Response `200`

Downlink was sent. Response contains logs from remote networks.

- string[]

## Other responses

- `403` — Authenticated user not allowed to perform this operation
- `404` — Device not found

## Changes

> 2 revisions in range; 1 could not be searched.

- **2019-08-12** `83b3cb04ea46` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/cablelabs/apis/lpwan-server/changes/api/devices/:id/downlinks/post.md)

---

[API](https://skmtc.dev/cablelabs/apis/lpwan-server.md) · [All operations](https://skmtc.dev/cablelabs/apis/lpwan-server/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/cablelabs/lpwan-server/revisions/a77a7d2af072/schema)