Want to save on electricity bills? Get a meter for $109!

Features Save on Electricity Costs with WEM3050T Basic cost-saving model (for users without solar PV systems) Advanced cost-saving model (for users with solar PV systems) Solutions Monitor Solar PV in Home Assistant Charge EV with Solar Surplus in Home Assistant Control Water Heating with Solar Surplus Monitor Split-Phase Grid and Inverter Output with a Single WEM3050T Energy Consumption Monitoring in IAMMETER-Cloud Solar PV Monitoring in IAMMETER-Cloud How to purchase

If you are new to IAMMETER, we recommend starting with the WEM3050T for the following reasons:

Comprehensive functionality (detailed in the next section).
Promotional price: Currently, as part of our market promotion, the WEM3050T is available for just 109 USD, including hardware and 3-6 months of IAMMETER-Cloud service.
For general users: You can directly connect the device to IAMMETER-Cloud. After the free service period ends, you can subscribe to continue using IAMMETER-Cloud permanently. (By then, you should have already confirmed that IAMMETER helps you save on electricity costs.)
For open-source enthusiasts and project integrators: The WEM3050T is compatible with almost all open-source and third-party systems, with extensive documentation provided by IAMMETER.

WEM3050T

Features

Three-phase four-wire energy meter with wide voltage support: 80V–277VAC (Phase Voltage), 140V–480VAC (Line Voltage).
Supports single-phase, three-phase (three-phase four-wire), and split-phase measurement, including Net Energy Metering (NEM) mode in three-phase systems.
Optimized for split-phase users (commonly used in North America), allowing a single meter to monitor both the grid and the inverter simultaneously.
Supports reactive power measurement, providing kVAR (reactive power) and kVARh (reactive energy) readings.
Built-in Wi-Fi connectivity.
Supports Modbus/TCP and provides a RESTful API, allowing other devices in the same WLAN to read meter data.
Supports multiple upload protocols: MQTT, HTTP/HTTPS, TCP/TLS, enabling the meter to send data in JSON format to the user's own server.
Compatible with almost all open-source platforms, such as Home Assistant, NodeRed, OpenHAB, ioBroker, Zabbix, Thingsboard, etc..
Includes 3-6 months of free IAMMETER-Cloud service. After the free period, users can subscribe for permanent IAMMETER-Cloud access.

Save on Electricity Costs with WEM3050T

At IAMMETER, we believe that electricity metering is just the basic function of a smart meter. The ultimate goal is to integrate it into an energy management system to help users reduce electricity costs.

Basic cost-saving model (for users without solar PV systems)

For users without solar generation, real-time energy monitoring helps identify unnecessary or abnormal electricity consumption. Eliminating these inefficiencies can directly reduce electricity bills.

Advanced cost-saving model (for users with solar PV systems)

For users with solar PV, there are greater opportunities to save. Since feed-in tariffs are typically lower than electricity rates, maximizing self-consumption is key. By controlling EV charging or heater operation based on solar surplus, users can reduce grid export and increase savings.

No matter whether you adopt the basic or advanced model, WEM3050T provides various solutions. Below are some examples: