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The ALPHA COMMUNICATIONS SS237 is an 18-volt DC system power supply rated at 1.5 amps, designed to provide regulated low-voltage power to audio intercom systems. It delivers stable DC output to keep intercom hardware running reliably in both residential and light commercial installations. Electricians and low-voltage technicians install this unit as part of a complete intercom wiring project, connecting it to the system control panel or bus per the manufacturer wiring diagram. The 18-volt DC output at 1.5 amps makes it a direct-fit power source for compatible audio-only intercom equipment.
The SS237 is intended for use with audio-only intercom systems where a dedicated, regulated 18-volt DC power supply is required. It is suited for residential entry systems, apartment intercom setups, and light commercial door-station applications where the intercom panel requires a separate or supplemental power source. Each unit is sold individually and is appropriate for new installations as well as service replacements on existing audio intercom systems.
Designed as an OEM-style power supply replacement for ALPHA COMMUNICATIONS audio-only intercom systems requiring an 18-volt DC, 1.5-amp power source. Verify system voltage and current requirements before installation.
Installation should be performed by a licensed electrician or qualified low-voltage technician in accordance with NEC Article 725 and any applicable local codes. Power down the intercom system completely before disconnecting or connecting the power supply. Ensure the output voltage and current rating of the replacement supply match the original unit specifications before energizing the system. Do not exceed the rated 1.5-amp output load.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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