The ES-43 is a recessed indoor siren, suitable for residential or professional installation. It is easily mounted on a drywall or mineral fiber ceiling and features a slim profile that allows the siren to protrude only 4mm from the ceiling surface. This ensures it is not visible to the human eye, maintaining the aesthetics of the space. It requires a 55mm diameter hole for its mounting and comes with an approximately 40cm long cable (red black) for its connection.