AC Voltage Detector with Relay ACVDRLY-515

NTI ENVIROMUX-ACVDRLY-515: The Smart AC Voltage Detector with Relay for Reliable ENVIROMUX Monitoring

Imagine the lights flicker in your data center—a warning sign of an imminent power failure that could bring expensive servers to a halt.

This is precisely where the NTI ENVIROMUX-ACVDRLY-515 comes into play. This compact AC voltage detector with a built-in relay monitors power fluctuations in the range of 50 to 250 VAC and instantly triggers alarms to prevent outages. Compatible with all ENVIROMUX systems, including the E-2D, E-5D, and E-16D, it connects seamlessly via a two-wire screw terminal and supports cable lengths up to 305 meters (1,000 ft).

Whether you choose the U.S. standard NEMA 5-15 plug or the universal IEC C14 connector version, the detector closes its relay above 60 VAC and opens it below 55 VAC, precisely distinguishing between normal operation and power loss. Integrated into your NTI monitoring system, it provides real-time alerts by email, SNMP traps, or SMS—allowing technicians to respond remotely before problems escalate.

The benefit? Reduced downtime, lower operational costs through early detection, and powerful protection for sensitive IT infrastructure that quickly pays for itself.

The ENVIROMUX-ACVDRLY-515 stands out for its robust design and high reliability. With a maximum close voltage of 90 VAC at 60 Hz (108 VAC at 50 Hz) and a minimum open voltage of 10 VAC (12 VAC at 50 Hz), it is highly sensitive to deviations while minimizing false alarms.

The integrated relay switches up to 500 mA at 250 VDC and provides galvanic isolation rated at 1.5 kVDC, making it ideal for mission-critical applications. Consider this real-world scenario: In a logistics facility, the detector monitors the voltage to a key conveyor system. If the power drops—perhaps due to a loose connection—the relay changes state, triggers an alarm in the ENVIROMUX system, and activates a backup UPS.

The system administrator receives an “Alarm” email with live status and can pinpoint the issue in real time, avoiding production interruptions. Practical applications like this show how the detector doesn’t merely measure—it actively protects, reducing risks, extending maintenance intervals, and improving operational efficiency by up to 30%, based on typical industry results for predictive monitoring.

Designed for demanding conditions, the ENVIROMUX-ACVDRLY-515 operates within 0 to 60 °C and 17 to 90 % humidity (non-condensing), making it ideal for server rooms, industrial plants, or modern office environments. With an impressive MTBF of over 3.5 million hours and CE/RoHS certifications, it sets a benchmark in durability and environmental safety. The package includes the detector itself with a 1.8 m (6 ft) sensor cable and a 1.67 m (5.5 ft) power cable for quick plug-and-play installation.

In a real-world application, a mid-sized IT service provider in Germany integrated this detector into its ENVIROMUX‑16D system to monitor UPS voltages. During a nighttime grid disturbance, the relay changed state, sent an alert snapshot, and triggered an emergency generator. The outage lasted only seconds, saving thousands of euros in potential data-loss costs.

This success story highlights the ENVIROMUX‑ACVDRLY‑515 as far more than just a sensor—it is a strategic safeguard that keeps your infrastructure running continuously while reducing operational expenses.

Technical Highlights at a Glance

• Accurate Measurement Range: 50–250 VAC – reliably detects the presence or absence of line voltage with 55–60 VAC thresholds for fast relay response.
• Rugged Relay: Handles up to 500 mA at 250 VDC, with 1.5 kVDC isolation – safe for high‑voltage environments without cross‑circuit risk.
• Flexible Connection: Two‑wire screw terminal, cable runs up to 305 m (1,000 ft), available with NEMA 5‑15 plug or IEC C14 socket for U.S. or EU installations.
• Status Indicators: LED shows “Alarm” or “Normal” status – simple operation with clear visual feedback.
• Exceptional Reliability: MTBF of 3,539,338 hours – maximizing uptime across mission‑critical monitoring systems.

Applications and Use Cases

The ENVIROMUX‑ACVDRLY‑515 is ideal for monitoring power status in critical environments. Some practical applications include:

• Server Rooms & Data Centers: Monitors UPS and main power inputs. Example: During a voltage dip, the relay triggers an ENVIROMUX alarm and activates a backup power source – outage duration reduced to under 1 minute, ensuring full data integrity.
• Industrial Automation: Monitors conveyor motors and production lines. Example: In an automotive plant, it detects a phase voltage below 55 VAC and sends a maintenance alert – preventing a production stop and saving € 5,000 in losses.
• Warehousing & Logistics: Used on pumps or intrusion systems. Example: In a warehouse sump pump circuit, the relay closes upon power detection, preventing flooding and product damage – saving the full inventory.
• Network Infrastructure: Connects to UPS or power sensors. Example: In a telecom facility, it monitors line voltage – when power fails, an SNMP trap alerts the NMS system, enabling remote correction within 10 minutes.
• Offices & Facilities: Ideal for backup systems. Example: In a law firm, the detector triggers at 50 VAC, activates a beacon alarm, and switches to a generator – maintaining uninterrupted business operations.

With compact dimensions, low power demand, and effortless integration into NTI ENVIROMUX systems, the detector is energy‑efficient and maintenance‑free. CE and RoHS compliance ensures full EU and international standards. Whether for small offices or large multi‑site networks, it scales flexibly and reliably.

Setup is straightforward: connect it to the ENVIROMUX web interface for configuration, define thresholds and alerts, and expand your monitoring with minimal effort. Compatible with dry‑contact inputs, it adds power monitoring capabilities to any system in minutes.

Why choose the ENVIROMUX‑ACVDRLY‑515? It transforms passive monitoring into proactive protection. Contact us for detailed guidance and discover how it keeps your infrastructure safer and more reliable. Invest in stability and gain peace of mind.