# Vutlan VT520 — AC Voltage Monitor

URL: https://www.promark.tr/en/products/vutlan-vt520
Category: Monitoring & Sensors
Family: [Vutlan Infrastructure Monitoring & Sensor System](https://www.promark.tr/en/products/site-monitoring)

Sensor that monitors AC mains — connects to Vutlan monitoring units for presence/absence detection, voltage level and outage alerts. Instant SMS/email/SNMP alarm on power cut.

## Key features

- AC presence detection.
- Voltage-level reading + threshold alarm.
- Power-outage detection.
- SNMP / e-mail / SMS alerting via the master unit (VT335G, VT825G etc.).
- Connects to any analog port of the master unit.
- Operating: -10 °C to +80 °C.
- Plugs into a socket (EU / US / AU / SA / UK plug options); VT520DIN version for DIN-rail measurement inside switchboards.

## Specifications

- **Type:** Analog AC voltage monitor (plug-in)
- **Manufacturer:** Vutlan s.r.o. (Bratislava, Slovakia)
- **Measured voltage:** 0–246 V AC, 1% accuracy
- **Plug options:** VT520-EU, VT520-US, VT520-AU, VT520-SA, UK-plug version; VT520DIN for in-panel use
- **Connection:** USB → RJ11 6P4C cable (1.8 m), analog port
- **Max distance:** 100 m (from master unit)
- **Power consumption:** 60 mW
- **Operating conditions:** −10…+80 °C
- **Dimensions:** 63 × 40 × 67 mm
- **Certificates:** LVD, RoHS, REACH, CE
- **Compatible:** VT225t, VT335G, VT336t, VT825G, VT855G, VT604G, VT608G and VT408 analog ports
- **GTIN:** 8588009886143
- **Warranty:** 90 days (Vutlan extension/accessory warranty); made in the EU

## Use cases

- Data-center AC supply voltage monitoring.
- Telecom BTS mains outage — operator SMS.
- Cold-storage mains outage — instant alarm.
- Bank branch — AC monitoring in the vault room.
- Hotel main panel AC monitoring + graph log.

## For a quote and BOM

https://www.promark.tr/en/contact · +90 312 544 0915 · destek@promark.tr