Yes. Anyone who can use a smartphone can use the system, whether sending or receiving alerts. The sender pairs BT-100 with the Sycall Link app, while recipients install the app on their smartphones to receive notifications. Since messages and location information are exchanged through the app, an internet connection capable of supporting messaging apps such as KakaoTalk is required.

Yes. You can add multiple family members, guardians, or caregivers to your Family group. In an emergency, alerts can be sent to all registered Family members simultaneously.

Yes. Even without BT-100, you can send an emergency SOS request to your caregivers through the Sycall Link app. In an emergency, you can also quickly call the police or fire department.

BT-100 uses Bluetooth communication. For reliable signal transmission, keep BT-100 within approximately 100 m of the smartphone running the app.

※ Actual range may vary depending on walls, doors, obstacles, and surrounding conditions.

Battery life varies depending on usage conditions and the number of alerts, but is generally around 1–2 years. You can check the remaining battery level in the Sycall Link app to know when it is time for a replacement.

When disconnected, it consumes more power than when connected.

Loosen the screws on the back of the device, remove the cover, and replace the coin cell battery. For detailed instructions, refer to the product manual or customer support page.

BT-100 is water-resistant for everyday use. It can withstand splashes and light moisture, but should not be used in water or in places such as bathtubs, swimming pools, or showers.

BT-100 connects to your smartphone via Bluetooth, but SOS alerts and location information are sent to caregivers over the internet. For reliable operation, keep your smartphone connected to mobile data or Wi-Fi.