2.1 | Technical requirements for installation (LTE, WiFi, power)

Prerequisites

The following prerequisites are required for the installation and use of the overall system and its components

Standard power supply, i.e. at least one accessible 230 V socket per care recipient and room) or comparable socket devices.
LTE (mobile internet reception) or Wi-Fi provided by the facility in the respective minimum bandwidth (should at least correspond to the old 4 G standard, ideally you should use the current LTE/5 G standard).

The following conditions are an advantage, but not essential:

A secure and suitable parking space for the alea docks for each room or care bed.
Protected storage options for the supplied replacement components (alea docks and alea clips).
As required: Provision of mobile devices for alea app users.
Charging devices (charging cables, etc.) for all mobile devices used.
Clearly visible placement of the instructions handed out during installation for the daily use of alea in the care environment.

To operate alea via WLAN (instead of or in addition to LTE), a separate WLAN network must be set up.
This network is intended exclusively for alea devices and must not be connected to the care home's internal network.

The setup should be carried out by your (internal or external) IT specialists!

Component	Requirement
SSID	alea-network
password	UY7AC@*X84EG7HpOOx1f
Encryption	WPA2/WPA3
Frequency band	2.4 GHz (mandatory)
VLAN	Internet only, isolated from the internal network
DHCP	Active, own server
Ports	443, 8883, 123, 80
Minimum signal strength	> -65 dBm
Devices	Only alea

Set up a new WLAN with the following access data:

Note: alea supports 2.4 GHz WLAN, as this offers a greater range and is typically more stable in buildings with thick walls or several storeys.

The WLAN must be operated on its own VLAN.
This VLAN may only provide Internet access and may not have access to other parts of the care home's internal network. Likewise, the internal network must not have access to the alea VLAN.

Requirements for the VLAN:

Independent DHCP server active
No access to internal servers or devices of the care home
Only outgoing Internet access (outbound) permitted
No incoming connections (inbound) from the Internet or from the care home network allowed
Only alea devices may be connected to this network

In order for alea to communicate correctly with the cloud system, the following connections must be authorised:

Protocol	Port	Goal	Purpose
TCP	443	*.aleacloud.de	Secure HTTPS communication, data upload
TCP	8883	*.aleacloud.de	MQTT over TLS (real-time data transmission)
TCP	123	?	NTP time synchronisation
TCP	80	?	Firmware and OTA updates

Note:

The DHCP server does not have to be physically separated. It can also be operated as a virtual machine (VM) or container within the existing IT environment as long as it is exclusively responsible for the alea VLAN.
Ensure that stable WLAN coverage with sufficient signal strength is available at all locations where alea is used.

After setting up, connect alea to the WLAN "alea-network".
The device automatically checks the Internet connection.
A successful connection is shown on the display or in the app with the status "Connected".

If no connection can be established:

If the WLAN is not available or the connection becomes unstable, alea automatically switches to LTE mode (if activated and a SIM card is inserted).
As soon as the WLAN is available again, the device automatically re-establishes the WLAN connection within 15 minutes.