The SMS-4 is a 5 Zone switcher for use with STW2-DM base stations and ETS speaker microphones. The switcher can be ordered in 2, 3, 4 and 5 channel versions.

Features:

• Powered by STW2-DM base station
• Connect up to 5 speaker microphones.
• Removable rear connectors for quick servicing
• Remembers last channel during power outage.
• Power: 12Vdc @ 50ma
• Reverse polarity protected and fused.
• High quality metal enclosure
• Dimensions: L7.75 x W7.25 x H 1.60
• Weight .82lbs

Includes:

• SMS-5 Switcher
• Installation instructions

Options:

• SMS-5 Switcher
• SMS-4 Four channel version
• SMS-3 Three channel version
• SMS-2 Two channel version