An Indoor Siren is a loud, alarm-triggering device designed to enhance security systems by providing audible alerts in case of emergencies. It works by emitting a high-decibel sound when activated by motion sensors, door/window sensors, or panic buttons, deterring intruders and alerting occupants.

The alarm volume and the duration of Indoor Siren E20 adjustable. Make sure the alarm sound can alert through the house while making your preferred setup. Here are the steps of adjusting siren alarm:

1. click the Indoor Siren E20 in Eufy app

2. choose Volume/Alarm Duration to adjust