Monitoring an APC UPS with node-red and MQTT

apc cs500 upsIntroduction

APC sell a decent range of USB connected Uninterruptable Power Supplies (UPS) such as the CS500 and BE700G.  These are supported by the linux utility apcupsd for control and monitoring.

This post explains how to monitor these UPS devices using Node-Red to obtain and publish data using MQTT.  It assumes you already have a working Node-Red install.

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