In distributed energy monitoring, legacy panel retrofits, and edge metering scenarios, engineers often face two challenges: no available power supply for the meter (e.g., outdoor enclosures, EV chargers, temporary distribution points), and difficult wiring with high communication costs. Traditional energy meters require separate power cables and RS485 communication lines, leading to long installation times and high retrofit costs.

The Roc61 is a self-powered, built‑in WiFi three‑phase IoT energy meter designed specifically for edge nodes where “power is hard to get and wiring is a hassle”. It draws power directly from the measured circuit (85–265VAC) – no external power supply needed. Built‑in 2.4GHz WiFi supports MQTT protocol for direct cloud platform upload. The whole unit weighs only 59g and can be flexibly deployed in space‑limited distribution boxes. One meter makes wireless energy monitoring as easy as connecting a home router.

Core Advantages: Power, Connectivity, Installation – Three Steps Done

1. Self‑Powered Design – No External Supply, Install and Go

The Roc61 uses three‑phase self‑powering technology, drawing operating power directly from the voltage between V1/V2/V3 and VN, with a working range of 85–265VAC. This means:

• Retrofit projects: No need to find an auxiliary power terminal inside the panel – eliminates wiring steps.
• Outdoor scenarios: For light poles, EV chargers, small PV combiner boxes – no extra 220V supply line required.
• Cost savings: Saves one power module per meter and the associated wiring labor.

2. Built‑in WiFi + MQTT – Direct Wireless to the Cloud

The Roc61 features 2.4GHz WiFi (IEEE 802.11 b/g/n) and supports MQTT protocol, sending real‑time data directly to an IoT cloud platform (our platform or any other MQTT broker). No RS485 gateway, no 4G DTU – just a WiFi hotspot. Remote data viewing, alarm push, and firmware upgrades are all supported. The LED status indicator provides clear feedback: alternating red/green means network configuration in progress, fast green blinking means parameter config mode, and steady red means AP configuration mode.

3. Ultra‑Compact Size + Integrated Design – Fits Any Enclosure

The Roc61 measures only 75×37×24mm and weighs 59g – about the size of a lighter. The current sensors and metering module are integrated into one unit, easily fitting into tight distribution boxes, EV charger enclosures, or equipment cabinets. It supports five wiring modes (3P4W_3CT, 3P3W_3CT, 3P3W_2CT, 1P3W, 1P2W), compatible with most global low‑voltage systems.

Performance at a Glance: Key Parameters and Their Real‑World Benefits

Self‑powered 85–265VAC, no auxiliary supply needed
Draws power directly from the measured circuit – suitable for most single‑phase/three‑phase low‑voltage systems. No separate power cabling required, especially valuable for outdoor, elevated, or legacy panel retrofits. Saves about 30 minutes of installation labor per meter on average.

• Built‑in 2.4GHz WiFi, MQTT protocol
  Wireless range up to 30–50 meters indoors (depending on environment). Data goes directly to the cloud – no extra gateway or communication wires. Fast network configuration via mobile App (EspTouch). Long press the Reset button for 7 seconds to erase network settings and reconfigure.
• Ultra‑small size 75×37×24mm, weight only 59g
  Only 1/10 the volume of a traditional DIN‑rail meter. Can be placed inside already crowded enclosures or zip‑tied next to cable trays. Ideal for EV chargers, outdoor metering boxes, mobile distribution units, and other compact applications.
• Wide current range: Rogowski coil 0–12,000A, voltage‑output CT 0–99,999A
  One meter covers from small branch circuits (a few amperes) to main feeders (tens of thousands of amperes). Rogowski coils allow non‑invasive installation – no modification of existing busbars, safe and convenient.
• Active energy Class 0.5S (IEC 62053‑22), voltage ±0.2%, current 0.1%
  Billing‑grade accuracy – can be used for electricity cost settlement. High precision ensures credible data for energy‑saving retrofits or load analysis.
• 1st–50th harmonic analysis (THD, TOHD, TEHD), percentage and magnitude
  Real‑time monitoring of harmonic pollution from VFDs, UPS, LEDs, etc. Helps detect risks such as neutral overheating or capacitor bank damage early.
• 6‑tariff multi‑rate energy, demand calculation (sliding/fixed)
  Supports time‑of‑use billing and peak demand charge calculation – ideal for tenant sub‑metering and commercial/industrial energy storage optimization.
• Operating temperature -25℃ to +70℃, IP20 protection
  Reliable in high‑temperature summer switchgear or cold winter outdoor enclosures. 12‑month warranty.
• International standards: CE, IEC 62053, EN 61010‑1
  Passes multiple EMC tests (ESD Level IV, surge Level IV) – stable operation in harsh industrial electromagnetic environments.

Typical Applications

1. Edge Node Metering (EV Chargers, Street Lights, Outdoor Cabinets)

For EV chargers, smart street lights, outdoor communication cabinets, etc., there is often no dedicated meter power supply and wiring is difficult. The Roc61 draws power directly from the charger input side, connects via WiFi to a local hotspot (or mobile phone hotspot), and reports charging energy, power, and current data to the O&M platform, helping operators with remote billing and fault alerts.

2. Legacy Factory Panel Retrofits – No Circuit Changes, No Extra Wiring

Many factory panels older than 20 years have no free space and cannot be de‑energized for retrofits. The Roc61’s tiny size allows it to be zip‑tied in an unused corner. Rogowski coils clamp onto busbars without disconnecting existing wiring. Self‑powering eliminates the need to find an auxiliary supply. WiFi data can be sent to an industrial router or mobile hotspot placed outside the panel, achieving low‑cost digital upgrades.

3. Temporary Power Monitoring (Exhibitions, Construction Sites, Events)

Temporary distribution points (exhibition booths, site temporary power, event broadcast vans) need short‑term monitoring but cannot justify expensive fixed meters. The Roc61 is plug‑and‑play: connect voltage wires to the breaker output side, clamp on current coils, and view real‑time power and energy on a mobile phone. Data can be uploaded to the cloud, supporting multi‑site centralized viewing. When the event ends, simply remove the device.

4. Commercial Building Tenant Sub‑Metering

Floor distribution rooms often lack space for standard DIN‑rail meters. The Roc61 can be placed directly inside cable trays or wire ducts. WiFi sends each tenant’s energy data to the property cloud platform, supporting 6‑tariff time‑of‑use billing. No RS485 bus wiring needed – dramatically reduces retrofit cabling costs.

5. Small PV and Energy Storage System Monitoring

Residential rooftop PV or commercial/industrial storage systems typically need bidirectional energy monitoring at the grid connection point. The Roc61 supports forward/reverse active energy metering, recording both generation (Export) and grid purchase (Import). Through WiFi to the home router, users can view real‑time generation power and revenue on a mobile App. Harmonic monitoring also helps verify inverter output quality.

Configuration & Commissioning – Done Wirelessly

The Roc61 offers two wireless configuration methods:

• Cloud network configuration: Use the mobile App (EspTouch) to scan the device QR code, enter the WiFi password, and complete configuration. The LED changes from alternating red/green to steady green, indicating successful connection.
• Local AP configuration: Briefly press the Reset button for 1.5 seconds to enter AP mode. Connect your phone to the hotspot “MC61-SN” (password 12345678). Open a browser to 192.168.4.1 to access the configuration page, where you can modify wiring mode, CT ratio, voltage range, and other parameters.

After all parameters are set, restart the device to apply the changes. Cloud platform address: https://overall.iot-safe.com/ – supports real‑time data monitoring, historical curves, report export, and more.

Quality and Certifications

The Roc61 is designed and manufactured to meet international standards, with CE certification, compliance with IEC 62053‑22 (Class 0.5S) , IEC 62053‑21 (Class 1) , EN 61010‑1, and others. Its EMC performance reaches IEC 61000‑4 highest level (Level IV) , ensuring stable operation in harsh industrial environments with VFDs, welders, etc. Operating temperature -25℃ to +70℃, storage -40℃ to +85℃ – suitable for demanding outdoor distribution applications.

About the Company

We have full in‑house R&D capabilities – from core sensing elements to communication protocol stacks. Our products are widely used in electric power, manufacturing, infrastructure, commercial buildings, and renewable energy projects, and we provide ODM and custom solutions to many multinational companies.

We believe that the best IoT meter should require no external power, no complex wiring, and be ready to use out of the box. The Roc61 embodies this philosophy – it turns traditional energy meters from “cabled burdens” into “wireless nodes”, making energy data accessible anytime, anywhere.

Start Your Wireless Energy Monitoring Journey Today

Whether you are retrofitting old panels, deploying EV charger networks, or conducting short‑term energy audits, the Roc61 helps you reduce installation costs, shorten deployment time, and access energy data anytime with its self‑powered, built‑in WiFi, and ultra‑compact size.

Contact our sales team for the Roc61 datasheet, pricing, and cloud platform trial accounts. We look forward to working with you to build smarter, more convenient energy monitoring networks.