TEC 2021: Altronix Showcases Tango1B with PoE Driven Power Supply and Backup Voltage Regulator May 7, 2021 | Home / May 7, 2021 rave-video / TEC 2021: Altronix Showcases Tango1B with PoE Driven Power Supply and Backup Voltage Regulator TEC 2021: Altronix Showcases Tango1B with PoE Driven Power Supply and Backup Voltage Regulator