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UK Freephone:  0800 254 5655

International:  +44 (0)114 331 0655

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Call us on:
UK Free: 0800 254 5655
Int: +44 (0)114 331 0655


Lines are open:
Monday - Friday, 9:00am - 5:00pm

Every UPS comes with a

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Maintenance Support Plan.

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Sentinel Pro SEP

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True Online Protection with Riello Sentinel Pro

The Riello Sentinel Pro is a compact online double-conversion UPS designed to safeguard critical IT systems, servers, and telecom networks. With a high output power factor (>0.9) and wide input voltage tolerance (140–276 V), it ensures reliable performance without unnecessary battery usage.

Features include an intuitive LCD display, ECO and Smart Active operating modes, and optional extended runtime models with additional battery packs. Its low noise level (<40 dBA) and cold start capability make it ideal for edge computing and sensitive environments.

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