Soft dB's SMS-SURF is a 25-volt loudspeaker system designed to generate optimum sound masking for surface-mounted applications .

It is equipped with a 16.5 cm (6.5 in.) driver installed in a sealed compartment.

The SMS-SURF must be installed on a drywall ceiling or ceiling tile surface through a 19.3 cm (8.6 in.) diameter hole.

Four different power taps (½, 1, 2 and 4 W) controlled with a rotary switch allow quick adjustments of the output level. ROHS compliant.