描述
Monthly electricity bills remain high but I don't know where to start looking? Do you really understand the electricity situation at home?
Are you still confused about the "unexpected surprise" when you receive your monthly electricity bill? Are you still anxious about not being able to monitor the power consumption of high-power devices in your home in real-time? Are you still repeatedly turning back and forth, unsure if you have turned off the air conditioning or water heater after leaving?
Traditional electricity meters can only give you a total monthly electricity consumption - you only know how much money was spent, but you have no idea at allWhere did the money goWhich device is the "electric tiger"? Which time period is the most expensive for electricity consumption? Is there any device that secretly consumes power late at night? These questions cannot be answered by traditional electricity meters.
What's even more frustrating is that when you want to connect your electricity data to Home Assistant for intelligent energy management, you only realize that the access process of most rail mounted energy meters on the market is extremely complicated - you need to tinker with RS485 to TCP gateway, manually write Modbus configuration, and even open the meter to switch communication protocols-. After a set of operations, it can take as little as half a day, as much as a week, and one also needs to have a certain level of programming ability. If there is an electric energy meter that can be used out of the box, connected to HA in 5 minutes, and can also be remotely controlled for opening and closing, would you immediately buy it?
If there is an electric energy meter that can be used out of the box, connected to HA in 5 minutes, and can also remotely control the opening and closing of the switch, would you immediately buy it?
Product Overview: A single-phase rail type smart energy meter designed specifically for Home Assistant
HA-EM14 is a2P modulus width (36mm) single-phase rail type energy meterdesigned specifically for smart home energy management scenarios. It adopts5 (80) A high current is directly connected todesign, and installation can be completed without the need for external transformers-. Built in RS485 communication interface, supporting standardModbus RTU protocol(also compatible with DL/T645-2007)-. Through ESPHome firmware and native integration with Home Assistant, the device automatically discovers when powered on, without the need to manually write any configuration files. The optional version also comes with a built-in relay, which supports remote control of opening and closing through Modbus commandsRemote closing control-.
. Core function disassembly
5 (80) A high current direct connection - no transformer required, easy to install
What is the function?
HA-EM14 support5 (80) A current specificationThe reference current is 5A and the maximum current is 80A-This means that a single electricity meter can cover all the electricity loads from ordinary households to small shops - air conditioners, water heaters, ovens, electric vehicle charging stations, all of which are effortless.
How to operate?
The electricity meter adoptsDirect access typeDesign, the live wire in and out can be directly connected in series in the circuit,No need for external current transformers (CT)The wiring terminals are clearly marked with the positions of the incoming and outgoing lines. After completing the connection according to the wiring diagram, they can be powered on and used-.
What benefits does it bring to you?
eliminates the cost and installation space of external transformers. If the current specifications of traditional electricity meters are not sufficient, additional transformers need to be installed, which not only increases procurement costs but also occupies space in the distribution box, making installation more complex. HA-EM14's 80A high current direct in design allows you to achievein one step without the need for any expansion accessories. Whether it's a household main line or a dedicated charging station line, it can be easily handled.
Standard Modbus RTU Communication - Industrial Grade Protocol, Where to Connect
What is the function?
HA-EM14 equippedRS485 communication interface, supportModbus RTU protocol(Function code 03/04 reads registers, 06 writes single registers, 10 writes multiple registers)-The readable electrical parameters include:Voltage, current, active power, power factor, frequency, total active energy-The default serial port parameters are 9600bps, 8 data bits, 1 stop bit, even parity, and address 1.
?
Connect the electricity meter to a host that supports Modbus (such as PLC, HA gateway, configuration software) through the RS485 bus, and read or write data according to the register address in the communication protocol document. What are the benefits of implementing the pull/close command through specific register writing-.
for you?
Modbus is the de facto standard in the field of industrial automation- this means that HA-EM14 can not only connect to Home Assistant, but also easily connect to any platform that supports Modbus such as PLC, SCADA system, configuration software, Node RED, etc.-. One purchase, multi scenario reuse. Today it is used for home intelligent energy management, tomorrow it will be moved to the studio for equipment energy consumption monitoring, and the day after tomorrow it will be connected to the charging station billing system - everything is fine.
HA Native Integration - ESPHome Auto Discovery, Four Step Solution
What is the Function?
HA-EM14 has built-inESPHome firmware, which achieves native level integration with Home Assistant. After the device is powered on, HA will automatically detect and prompt to add, and there is no need to manually write YAML configuration files throughout the process.
?
Only four steps are needed:
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Power on- Power on the device to ensure that it is reachable from the network where HA is located;
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Distribution Network- Connect your phone to the "HA xxxx" hotspot (password 12345678), automatically redirect to the distribution network backend (or access 192.168.4.1), and configure the 2.4G Wi Fi network at home;
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Add device to HA- Return to Home Assistant, enter ESPHome integration, the meter will be automatically discovered, click add to complete;
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Start using- Add energy consumption cards and toggle switches to the HA dashboard to create automation scenarios such as power alarms and automatic power outages. What benefits does
bring to you?
From unpacking to seeing real-time electricity data in HA, the entire process takes no more than 5 minutes. Unlike traditional solutions that require purchasing an RS485 gateway, configuring Modbus TCP connections, and manually writing sensor configurations-- HA-EM14 encapsulates all of these.Even novice smart home users can easily get started with, no longer having to go through forum tutorials just to connect to an electric meter.
LCD display+real-time monitoring - data at a glance, anytime, anywhere control
What is the function?
HA-EM14 is equipped with6-digit LCD display screen(including 1 decimal place), which can display voltage, current, active power, power factor, frequency, total active energy and other data in rotation-. The pulse indicator light on the panel visually indicates the energy metering status. How to operate
? After power on, the LCD automatically displays various electrical parameters in rotation, which can be viewed without any operation. At the same time, all data is synchronized to HA and 88 independent backend through Wi Fi, allowing mobile phones and computers to view anytime, anywhere.
After power on, the LCD automatically displays various electrical parameters in rotation, which can be viewed without any operation. At the same time, all data is synchronized to HA and 88 independent backend through Wi Fi, allowing mobile phones and computers to view anytime, anywhere.
bring to you?
Local display+remote monitoring, dual protection. Even without looking at your phone, walking to the distribution box and scanning the LCD can immediately reveal the current electricity usage situation. Through the HA dashboard, you can use your mobile phone to check real-time power and cumulative electricity consumption at home anytime and anywhere. On the way to work, you can check if the air conditioning is turned off at home, and on business trips, you can monitor whether the refrigerator is running normally. With the power consumption, you can fully grasp the functions of remote opening and closing (optional)+88 independent background - remote control, data autonomy? The optional version ofCheck real-time power and cumulative electricity consumption at home anytime, anywhere with your mobile phone——Check if the air conditioning at home is turned off on the way to work, and monitor if the refrigerator is running properly while on a business trip-. Electricity usage is under control.
Remote opening and closing (optional)+88 independent backend - remote control, data autonomy
What is the function?
has a built-inmagnetic holding relay, which supports remote control of the opening and closing of internal relays in the meter through Modbus commands-. At the same time, the device is built-in88 port independent web backend, supports switching between Chinese and English, light/dark theme switching, andMQTT connection configurationFunction.
? In HA, opening and closing the switch is presented as a physical switch, which can be turned on and off by clicking. In the 88 backend (browser input device IP: 88), you can configure the MQTT server address, port, username, and password to push electricity data to your own server. What benefits does
In HA, opening and closing the switch is presented as a physical switch, which can be turned on and off by clicking. In the 88 backend (browser input device IP: 88), you can configure the MQTT server address, port, username, and password to push electricity data to your own server.
bring to you?
Remote power on/off allows you to control the power supply at home even from thousands of miles away. Did you forget to turn off the air conditioning? One click power off switch. Do you want to achieve an energy-saving scenario of 'automatic power-off when leaving home'? Create automation in HA-. The MQTT function in the 88 backend means thatdata is completely autonomous and controllable- you can push electricity consumption data to your own database for detailed energy consumption analysis,Does not rely on any third-party cloud platform.
2P rail installation+wide temperature work - small volume, high performance
What are the functions?
HA-EM14 adopts standard DIN rail installation with2P modulus width (36mm), working temperature range-25 ℃~+70 ℃, relative humidity ≤ 85% RH.
How to operate?
Installation can be completed by directly inserting the 35mm standard DIN rail into the distribution box without the need for screws. Connect the live and neutral wires according to the terminal markings. What benefits does
bring to you?
2P width (36mm) takes up almost no space in the distribution box- A regular household distribution box can be easily filled with any available space-. The wide temperature working range means that it can not only be installed in indoor distribution boxes, but also in outdoor charging stations, base station cabinets, factory equipment control boxes, and other harsh environments.Waiting for places with harsh environments-. One meter, multiple uses, unlimited scenarios.
Suitable for people and scenarios
Most suitable for these three types of people
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Home Assistant players: want to connect household electricity data to HA for energy dashboard, electricity alarm, and automated energy-saving control;
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Small business owners: Need to monitor the electricity usage of shops, studios, and charging stations, achieve remote power on/off and prepaid management;
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System integrator/developer: A standardized and easily integrated rail type energy meter needs to be selected for the project to build an energy consumption monitoring system.
Three typical implementation scenarios
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Home intelligent energy management: Connect HA-EM14 to the home main incoming line and create a power consumption dashboard in HA - real-time power, daily electricity consumption, and monthly trends are clear at a glance. Set power over limit alarm: push notification when power exceeds the set value; Cooperate with automation, automatically turn off the power when leaving home, energy-saving and safe.
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Remote billing and control of charging stations: Installed in the circuit of electric vehicle charging stations, it remotely checks the charging power and real-time power through HA, and automatically shuts off the power after charging is completed to prevent overcharging-.
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Equipment energy consumption monitoring and alarm: In workrooms or small factories, HA-EM14 is separately installed for key equipment to monitor the real-time power consumption of the equipment. When the device shuts down abnormally (sudden power drop) or overloads (sudden power rise), the first time to push an alarm-.
User Witness and Summary
"Previously, in order to connect the household electricity to HA, I tried to monitor each one with smart sockets, but the total incoming line could not be measured, and high-power devices could not be moved. Later, I bought HA-EM14, and from unpacking to seeing real-time power in HA, it took less than 10 minutes. Now you can see the electricity consumption of the whole house at a glance on your mobile phone, and you can also set a power over limit alarm——From unpacking to seeing real-time power in HA, less than 10 minutesNow you can see the electricity consumption of the whole house at a glance on your phone, and you can also set a power over limit alarm——Last month, the electricity bill decreased by 18% compared to the same periodBecause it was discovered that the water heater was still consuming electricity due to insulation late at night. ”Mr. Chen, a smart home player from Hangzhou
, said, "We are developing a charging station billing system for our customers. Previously, the electricity meters we used had to be equipped with an additional gateway and code written, and on-site debugging often took half a day. After replacing the HA-EM14,Modbus was directly connected to our PLC, and onewas completed in half an hour. The remote power on/off function is particularly practical, and customers can directly cut off power remotely if they owe money.The operation and maintenance efficiency has been improved by at least 60%. "- Zhang Gong, a system integrator of a charging station,
HA-EM14 allows you to bring electricity consumption data into the world of Home Assistant in the simplest way possible. Whether you want to do home energy management, build a charging station billing system, or monitor device electricity usage - this 2P small volume, 80A high current, native HA supported single-phase rail type energy meter can easily help you achieve it. Real time monitoring, remote control, and data autonomy - this is the promise HA-EM14 gives you.
Whether you want to do home energy management, build a charging station billing system, or monitor device electricity usage - this 2P small volume, 80A high current, native HA supported single-phase rail type energy meter can easily help you achieve it.
Real time monitoring, remote control, data autonomy——This is the promise HA-EM14 made to you.
