Comelit Simplebus 2 Voltage Adapter for 1210 and 1210A Power Supplies SK9015A

Overview

Where the system supply is either a 1210 power supply or the 1210A, this small part is the voltage adapter Comelit makes for the job. It suits Comelit Simplebus 2 door entry systems in both audio and audio/video form.

It sits alongside other intercom and door entry accessories as a system part rather than a user device.

How it works

It draws its power from the video door entry bus, so it needs no separate mains supply. It takes 33VDC and delivers a 31 VDC output.

The video intercom guide explains the main types of door entry system.

What the figures mean in practice

• 0.4 W absorption: the most it draws from the bus, a small share of the supply's budget.
• 3.41 W output: the rated output power, which limits what can be run from it.
• -25 to 55 °C: the operating temperature range, with humidity from 25 to 95%.

Planning your system

Confirm the system runs from a 1210 or 1210A power supply unit before ordering, because the adapter is made for those systems. Both audio and audio/video Simplebus 2 installations qualify.

As a rule, isolate the door entry supply before adding parts to the bus, and test every call point on the system afterwards.

Standards and ratings explained

The CE marking covers RoHS II (restriction of hazardous substances) and the EMC directive for electromagnetic compatibility.