---
type: Sensor Reference
title: "SNMP Voltage, Current & Power OIDs (ENTITY-SENSOR)"
description: "The SNMP OIDs for electrical sensors — voltsDC, voltsAC, amperes, watts and hertz via ENTITY-SENSOR-MIB, with scale handling and PDU/UPS power notes."
resource: "https://snmp-monitoring.info/sensors/power/"
tags: [sensors]
timestamp: 2026-07-11T00:00:00Z
---

# SNMP Voltage, Current & Power OIDs (ENTITY-SENSOR)

The SNMP OIDs for electrical sensors — voltsDC, voltsAC, amperes, watts and hertz via ENTITY-SENSOR-MIB, with scale handling and PDU/UPS power notes.

## Related concepts

- Up: [SNMP Sensors & OID Catalog: Every Metric You Can Monitor](/sensors/index.md)

## Frequently asked questions

### What OID is voltage in SNMP?

Voltage is an ENTITY-SENSOR-MIB sensor typed voltsDC or voltsAC, with the reading in entPhySensorValue (1.3.6.1.2.1.99.1.1.1.4). Apply entPhySensorScale (.2) — voltage is commonly reported in millivolts, so a raw 12000 at scale milli is 12.000 V. UPS input/output voltages are in the UPS-MIB instead.

### What OID is power in watts?

Power is an ENTITY-SENSOR sensor typed watts, read from the same entPhySensorValue column with its scale applied. For per-outlet or per-PSU wattage and cumulative energy (kWh), look to the vendor PDU MIB or the platform's enterprise MIB rather than the generic sensor table.

### Where is per-outlet current in SNMP?

In the PDU's vendor MIB under 1.3.6.1.4.1, not in a standard table. Per-outlet amps, per-phase load and cumulative energy are vendor-specific objects — see the PDU OIDs reference and the vendor's MIB for the exact leaves.

### How do I apply the sensor scale?

Read entPhySensorScale and entPhySensorPrecision alongside the value, then compute entPhySensorValue × 10^(−precision) and interpret it in the scale's unit. For a millivolt-scaled reading, that means dividing to volts — a 12040 at scale milli is 12.040 V.

## Source

Concept generated from https://snmp-monitoring.info/sensors/power/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).