Frequency band: 2.4GHz only. WiFi 802.11 b/g (WiFi 4). Doesn't support 5GHz frequency or "dual band" mode.
WiFi security: WEP, WPA and WPA2
SSID format (WiFi network name): 32 characters maximum (Only lower case letters and numbers)
SSID broadcasting: Activated (the scale cannot be installed if the SSID is hidden)
Password format: 32 characters maximum (Only lower case letters and numbers)
DHCP: Activated
Not compatible with some "Mesh" or 4G/5G hotspot configurations.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/115004003869-iHealth-HS5-Required-router-internet-box-characteristics