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IoT Energy Meter — WiFi, Cloud, No Gateway

IoT-Based Smart Energy Meter for Industrial India.

Titan is an IoT energy meter — a smart energy meter using IoT connectivity with built-in WiFi and Ethernet, no gateway needed. Class 0.5S accuracy, MQTT and Modbus protocols, edge computing on-device, and OTA firmware updates. Connect to any cloud platform or use the Tech OVN cloud Energy Management System (EMS) for turnkey remote energy monitoring.

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Titan IoT energy meter with built-in WiFi and Ethernet on DIN rail

Why an IoT-Based Smart Energy Meter?

Six reasons Titan replaces traditional meters and gateways with a single connected IoT energy meter.

Built-In WiFi + Ethernet

No external gateway or data concentrator to fail. Each Titan meter connects directly to the cloud over WiFi or Ethernet — plug in, configure from the app, and data flows.

MQTT + Modbus + BACnet

Publish energy data over MQTT for cloud-first architectures, or use Modbus RTU/TCP or BACnet MS/TP / BACnet/IP for BMS and SCADA integration. The network-side protocols (MQTT, Modbus TCP, BACnet/IP, REST API) run alongside whichever single role the RS485 port is set to.

Edge Computing On-Device

Data logging, demand profiling, TOU registers, and real-time alerts all run on the meter. If the internet drops, the meter continues logging and syncs when connectivity returns.

OTA Firmware Updates

Remote firmware updates over WiFi — no site visits, no USB cables. Roll out new features, security patches, and configuration changes across your entire meter fleet.

RS485 Bus Master

The RS485 port can be set as a Modbus RTU bus master, polling legacy Modbus devices (existing meters, sensors, PLCs) and forwarding their data to the cloud alongside its own measurements. RS485 runs one role at a time — Modbus RTU slave, Modbus RTU master or BACnet MS/TP — so in master mode a BMS reads the meter over the network side instead.

Open, Standard Protocols

Modbus, BACnet and MQTT are open industry standards — your data isn't trapped behind a proprietary protocol or a single paid cloud. Integrate with any BMS, SCADA, MQTT broker, or analytics platform you already run.

Communication Protocols — Modbus TCP, RS485 & MQTT

Titan is an internet-connected energy meter that speaks every protocol your stack needs — Modbus RTU or BACnet MS/TP over RS485 (one role at a time), and Modbus TCP, BACnet/IP and MQTT over Ethernet or WiFi running alongside it. Serve a local BMS or SCADA over Modbus or BACnet while streaming the same readings to the cloud over MQTT, with no gateway, converter, or data concentrator in between.

Modbus RTU over RS485

An RS485 energy meter for legacy BMS, SCADA, and PLC networks. Titan speaks Modbus RTU over a standard 2-wire RS485 bus, with full holding/input registers for voltage, current, power, energy, and power quality.

Modbus TCP over Ethernet

A Modbus TCP energy meter with a built-in Ethernet port — no RS485-to-Ethernet converter, no serial gateway. Poll Titan directly over your LAN at full speed from any Modbus TCP master, SCADA head-end, or building automation controller.

MQTT over WiFi / Ethernet

An MQTT energy meter that publishes to any broker — AWS IoT Core, Azure IoT Hub, HiveMQ, Mosquitto, or the Tech OVN cloud. Lightweight pub/sub for cloud-first IoT architectures, with configurable topics, QoS, and TLS security.

The Modbus register map, MQTT topics and command reference, and runnable Python examples are published as reference documentation in the Titan integration repository on GitHub.

Connectivity at a Glance

ParameterSpecification
Field bus2-wire RS485 — one role at a time: Modbus RTU slave, Modbus RTU master or BACnet MS/TP
Wired IPModbus TCP and BACnet/IP over 10/100 Ethernet — no serial gateway required
Wireless IPBuilt-in 2.4 GHz WiFi (802.11 b/g/n)
Cloud / pub-subMQTT to any broker (direct to AWS IoT Core or Azure IoT Hub, or HiveMQ, Mosquitto, Tech OVN cloud), TLS-secured
Simultaneous operationThe Ethernet/WiFi side (Modbus TCP, MQTT, REST API, BACnet/IP) runs alongside the RS485 role — serve local BMS/SCADA while streaming to the cloud
CloudDirect to the Tech OVN cloud / EMS over WiFi or Ethernet — no separate energy-server PC
Edge resilienceOn-device logging (1–60 min) with automatic backfill when connectivity returns
UpdatesOTA firmware over WiFi — no site visits, no USB

Traditional Setup vs. Titan IoT

One device replaces the meter-gateway-SIM stack.

Traditional Meter + Gateway

Separate meter, separate gateway, separate SIM card, separate power supply. Multiple vendors, multiple failure points, multiple license fees. Data arrives 15 minutes late.

Titan IoT Energy Meter

Meter and connectivity in one device. WiFi or Ethernet built in. Data published over MQTT or polled over Modbus or BACnet in real time. One vendor, one device, one subscription.

Use Cases

From remote site monitoring to OEM integration — four ways facilities and product companies deploy Titan as an IoT energy meter.

Remote Energy Monitoring

Monitor unmanned sites — telecom towers, pump stations, transformer substations, retail stores — without local IT infrastructure. WiFi from a mobile hotspot or Ethernet from any available port.

Cloud Energy Monitoring

Stream energy data to AWS IoT Core, Azure IoT Hub, or any standard MQTT broker you run yourself. Build custom dashboards, ML models, and automated workflows on top of Class 0.5S meter data.

OEM Integration

Machine builders embed Titan meters for energy-as-a-feature. Publish per-machine energy data to your product cloud. Offer customers energy analytics as a value-add service.

Smart Building IoT

Integrate with building IoT platforms via MQTT, Modbus or BACnet. Feed energy data into occupancy-based HVAC control, lighting automation, and tenant billing systems.

Frequently Asked Questions

Common questions about IoT energy meters, cloud connectivity, and integration.

An IoT energy meter is a smart energy meter with built-in internet connectivity (WiFi, Ethernet, or cellular) that can transmit energy consumption data to cloud platforms in real time. Unlike traditional meters that require manual reading or separate data loggers, IoT energy meters enable remote energy monitoring, automated analytics, and integration with building management and industrial IoT systems.
No. Titan has built-in WiFi and Ethernet. It connects directly to the internet and publishes data over MQTT or responds to Modbus TCP queries. No gateway, no data concentrator, no additional hardware.
Yes. Titan publishes data over standard MQTT to any broker — AWS IoT Core, Azure IoT Hub, HiveMQ, Mosquitto, or the Tech OVN Energy Intelligence Platform. You can also use Modbus TCP for direct polling from your own systems.
Titan continues logging data on-device at configurable intervals (1–60 minutes). When connectivity returns, stored data is synced automatically, so on-device buffering covers typical network outages.
Cellular smart meters (4G/NB-IoT) are designed for utility AMI deployments where WiFi isn't available. Titan's WiFi + Ethernet approach is designed for buildings and factories where IP connectivity already exists — lower cost per point, no SIM card fees, higher bandwidth for real-time data.
Yes. Titan meters work standalone — logging data on-device, serving data over Modbus RTU/TCP or BACnet, and publishing over MQTT to any broker. The Energy Intelligence Platform adds dashboards, analytics, and alerting, but is not required.
Yes — both. Titan provides Modbus RTU over its RS485 port for serial field-bus networks and Modbus TCP over its built-in Ethernet port for IP networks. There's no need for an RS485-to-Ethernet converter or a separate serial gateway; the meter is a native Modbus TCP energy meter out of the box. The full register map (voltage, current, power, energy, power factor, frequency, THD) is exposed over both transports.
Yes. Titan is an RS485 energy meter that speaks Modbus RTU on a standard 2-wire bus, so it drops straight into existing building management (BMS) and SCADA networks. Alternatively the RS485 port can be set to BACnet MS/TP, or to Modbus RTU master to poll other legacy Modbus devices and forward their data to the cloud — one role at a time.
Titan is a true MQTT energy meter and publishes to any standard MQTT broker — AWS IoT Core, Azure IoT Hub, HiveMQ, EMQX, Mosquitto, or the Tech OVN cloud. Topics, publish interval, QoS level, and TLS security are all configurable, so the meter fits cloud-first and Industry 4.0 architectures without middleware.
No. The Ethernet port is built into the meter and runs Modbus TCP and MQTT directly. Plug it into any switch or router on your LAN and the meter is reachable — there is no RS485-to-Ethernet converter, data concentrator, or protocol gateway in the path. This is what makes Titan a genuinely internet-connected energy meter rather than a serial meter bolted to a gateway.
Yes. Titan connects straight to a server — a cloud endpoint or an on-premise server — over its built-in WiFi or Ethernet. It publishes readings over MQTT to your broker/server, or answers Modbus TCP polls from a server on the same LAN, with no IoT gateway, data concentrator, or serial-to-Ethernet converter in the path. In practice that's a meter-to-cloud or meter-to-server link with a single device instead of a meter-plus-gateway stack.
Use Modbus RTU over RS485 when you're wiring into an existing serial BMS/SCADA field bus — short runs, daisy-chained devices, no IP needed. Use Modbus TCP over Ethernet when a controller or SCADA head-end polls the meter over your LAN and you want IP speed without a serial gateway. Use MQTT over WiFi/Ethernet when you're pushing data to the cloud or an IoT platform (AWS IoT, Azure IoT Hub, HiveMQ, Mosquitto) and want lightweight, firewall-friendly pub/sub. Titan runs the network-side protocols (Modbus TCP, MQTT, REST API, BACnet/IP) alongside its RS485 role, so a local BMS and your cloud can read the same meter at once — you rarely have to pick just one. The one constraint: the RS485 port runs one role at a time (Modbus RTU slave, Modbus RTU master or BACnet MS/TP).

Related Solutions & Products

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Titan Smart Energy Meter

Class 0.5S DIN rail meter with built-in WiFi, Ethernet, RS485, and MQTT — the IoT energy meter hardware behind the solution.

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Multifunction meter (MFM)

3-phase Class 0.5S multifunction meter in a 96 × 96 mm panel housing. Measures kWh, kVAh, kVArh, PF and demand. ₹7,500 for the RS485-only model; ₹8,500–18,300 with full comms (Modbus TCP, MQTT).

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What an IoT Energy Meter Costs

Priced per measurement point, with no gateway or per-site licence to add.

ParameterSpecification
Cost per measurement point₹8,500 – ₹18,300 per Titan meter, or from ₹7,500 for the RS485-only panel variant.
MOQ — catalogueNone. A pilot or an evaluation order can be one unit.
Lead timeRegular orders ship from stock; large quantities (200+ units) 4 weeks from confirmed PO.
Warranty2 years standard from date of dispatch.
Per-site infrastructureNone. WiFi and Ethernet are built into the meter — no energy-server PC, data concentrator or per-site software licence.
Cloud dependencyNone required. Modbus RTU/TCP and BACnet are local and work with no internet connection; the Tech OVN platform is optional.

Ready to connect your energy data?

Talk to our team about deploying Titan IoT energy meters in your facility, building, or product.

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