> For the complete documentation index, see [llms.txt](https://docs.mclimate.eu/mclimate-lorawan-devices/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mclimate.eu/mclimate-lorawan-devices/devices/mclimate-open-close-sensor-lorawan/open-close-sensor-lorawan-communication-protocol/notification-blind-time.md).

# Notification Blind Time

{% hint style="info" %}
Default notification blind time changed from 0 minutes to 1 minute for devices with firmware version ≥ 1.3.
{% endhint %}

The Notification Blind Time is used to send the status (open / close) after a certain time. In this time interval, each detected status is counted by the status counter. When the time interval expires, the current status (open / close) and counter are sent to the keep-alive packet.

Notification Blind Time is useful when you are not interested in the events in real-time, but rather want to understand the "final" status of the sensor. E.g. if you install the sensor on a door, there might be a number of opens/closes in a single NBT. The sensor will not send an uplink for every event, but will send the final status of the sensor after NBT interval since the first event.

{% tabs %}
{% tab title="SET" %}

<table data-header-hidden><thead><tr><th width="142"></th><th width="126"></th><th></th></tr></thead><tbody><tr><td><strong>Byte index</strong></td><td><strong>Bit index</strong></td><td><strong>Hex value – Meaning</strong></td></tr><tr><td>0</td><td>-</td><td>1E – The command code.</td></tr><tr><td>1</td><td>-</td><td><p>XX - Notification Blind Time in minutes. </p><p>Default value is 1 minutes.</p></td></tr></tbody></table>

**Example command**, **\[Hex]:** 0x1E0A – The server sets notification blind time to 10 minutes.
{% endtab %}

{% tab title="GET" %}

<table data-header-hidden><thead><tr><th width="133.99999999999997"></th><th width="168"></th><th></th></tr></thead><tbody><tr><td><strong>Byte index</strong></td><td>Sent request</td><td><strong>Received response</strong></td></tr><tr><td>0</td><td>1F – Command code.</td><td>1F - The command code.</td></tr><tr><td>1</td><td></td><td>XX - NBT in minutes.</td></tr></tbody></table>

**Example command: 0x1F**

**Example command sent from server**, **\[Hex]:** 1F;

**Example command response**, **\[Hex]:** 1F0A => NBT = 0A =  10 minutes.
{% endtab %}
{% endtabs %}


---

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