# Guard me WiFi

Guard me WiFi is similar to the original mode as it also sends messages once the objects moves, vibrates or changes position. The mode-specific event is sent with 3 MAC addresses for better localisation precision.

Guard me WiFi

**Hex value:** 0x15

**Use cases:** Monitoring objects; security for both personal and commercial belongings

**Devices that support this mode:** SimplePack Plus

**Required sensors:** Accelerometer, WiFi module

**Mode-specific deltas:** None

**Mode-specific events (uplink messages):**

For more information on what uplink messages (***mode-independent events***) and additional data from various sensors in the device (***appended payload***) can be sent regardless of mode and how to fine-tune message behavior (***alerts***), see *Mode-independent information and events.*

| **Hex** | **Event name**                  | **Alert** | **Event information**                                                       |
| ------- | ------------------------------- | --------- | --------------------------------------------------------------------------- |
| 8C      | Start of movement with WiFi 1/2 | 1         | <p>Accelerometer-based movement detection,<br>sent with 3 MAC addresses</p> |
| 8D      | Start of movement with WiFi 2/2 | 1         |                                                                             |

**Registers relevant for this mode:**

If you change the **general sensitivity** of the accelerometer and the magnetometer (0x11 and 0x19), respective **axis registers** reset to 0 as the general settings replace them and vice versa.

| **Hex** | **Register name**                | **Default value (hex)** |
| ------- | -------------------------------- | ----------------------- |
| 0x04    | Sleep time                       | 1 minute (0x41)         |
| 0x11    | Accelerometer sensitivity        | 7 (0x07)                |
| 0x12    | Accelerometer X axis sensitivity | 7 (0x07)                |
| 0x13    | Accelerometer Y axis sensitivity | 7 (0x07)                |
| 0x14    | Accelerometer Z axis sensitivity | 7 (0x07)                |
| 0x3C    | Accelerometer measurement period | 1 second (0x01)         |
| 0x49    | Accelerometer detection delay    | 0 seconds (0x00)        |

**Similar modes:**

| **Hex** | **Mode name**         | **Description**                       |
| ------- | --------------------- | ------------------------------------- |
| 0x02    | Guard me              | Original version of Guard me, no WiFi |
| 0x27    | Guard me Wifi Atlas   | WiFi Atlas version of Guard me        |
| 0x51    | Guard me Wifi Precise | WiFi Precise version of Guard me      |

**Switching to mode, arming and disarming information:**

Follow the *Basic Operations With SimpleHw Devices guide*, where you can also find information about LED behavior, relevant Sigfox messages and more.

Here’s what’s important for **Guard me WiFi** messages:

* To set this mode, the downlink needs to include this mode register setting: **0115**
* The uplink messages need to begin with the mode hex as the first byte: **15**
* When arming the device, you should see this message: **1510**
* When the device is armed, it should send you these two bytes: **1511**
* If you disarm the device via long press, you should receive this message: **1514**


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