LP405 25A Heavy Duty Smart Plug Meter Sockets Industrial Energy Monitor Trip-Rate Billing, OVP/UVP/OLP Color Screen Magnetic Relay Offline Logging WiFi Tuya/Smart Life for AC/Heaters
€45
Price: $44.99
(as of Sep 30, 2025 19:57:51 UTC – Details)
Product description
Featuring a flame-retardant PC outer casing and core components with magnetic latching relays, our design sustains continuous 25A+ loads through overspec pure copper wiring. This ensures fail-safe operation – high load 25+ thermal stress casing without combustion.
AULIFANTS LP405 SMART SOCKETS
Usage Bill Monitor, Full Control
Real-Time Monitoring
Accumulated Energy, 0.01kWh precision. Electricity Cost, Auto-calculated with triple rates. Switch Status, Real-time relay position. Working Time. Electrical Parameters: Live Voltage, 0.1V resolution (80-300V), Live Current, 0.01A accuracy (±1%). Instant Power and Power Factor (PF).
Timer and Usage Limits
Timer for scheduled ON/OFF, Daily/weekly automation. Auto-adjust with sunrise/sunset. Energy Saver, Shut down heavy loads at peak rates. Usage limits for kWh Countdown, Auto cutoff at preset value. Safety Guard, Prevent device overburning (e.g. heaters), Budget Lock, Precise monthly cost control.
Summer/Winter dual-period time-of-use billing
dual-period time-of-use (TOU) billing for summer and winter periods. Within each period, users can independently set peak, valley, and flat electricity rates (three-tier rate structure). The device provides 24/7 automatic energy cost calculation, ensuring accurate billing year-round.
Dual-Mode Smart Control
Cloud Remote Control, Global access via Tuya/Smart Life apps, Instant switching command. Real-Time Sync, Device status pushed to phone instantly. Local Manual Control: Physical Button, Dedicated ON/OFF key on device. Zero-Latency, Magnetic relay instantaneous action.
Over/Under Voltage Protection, Overload Protection
The Over/Under Voltage Protection monitors the supply voltage and automatically disconnects power to safeguard equipment in case of abnormally high or low voltage, this feature can be combined with an Auto-Reclose function to automatically restore power once voltage returns to normal.
Offline Data Logging
Decade-Long Data Vault, 512MB MicroSD Card Standard (free with machine purchase). Full-Parameter Logging: Voltage/Current/Power/Rates/PF/Working Time/Events. Dual-File Architecture: ddmmyy-D.csv, Minute-level metrics (1 record/min), ddmmyy-E.csv, State-change events (on-demand).
Please pay special attention to the following points: 
Regarding of micro SD card
Use a small-capacity micro SD card (e.g., 512MB, 1GB, 2GB) with Class 6 (Standard Speed).
Pre-use Reminder
Format the card to FAT32 before use.
Safety Notice
Do not insert/remove the card while the device is powered on.
Rate Setting
Rate settings support up to three decimal places.
Model LP405 Voltage AC110V~AC240V Current <25Amp Frequency 50/60Hz Accuracy Rate 1.0 Pulse 1600imp/kWh Network WiFi Over Load Protect Default 25Amp, Setting available Over Under Voltage Protect Default off, Setting available Relative Humidity < 95% Temperatures 24 ~ 122℉ (-10℃~50℃) Size 137 x 75 x 36 mm Power consumption <2Watt
[Real-Time Monitoring]: Energy Tracking: Accumulated Energy, 0.01kWh precision. Electricity Cost, Auto-calculated with triple rates. Status Monitoring: Switch Status, Real-time relay position. Working Time, Minute-level load duration. Electrical Parameters: Live Voltage, 0.1V resolution (80-300V), Live Current, 0.01A accuracy (±1%). Instant Power and Power Factor (PF).
[Dual-Mode Smart Control]: Cloud Remote Control: Cross-Platform, Global access via Tuya/Smart Life apps, Instant switching command execution. Real-Time Sync, Device status pushed to phone instantly. Local Manual Control: Physical Button, Dedicated ON/OFF key on device. Zero-Latency, Magnetic relay instantaneous action. Offline Operation, Works without internet.
[Industrial 25 heavy-duty, Magnetic Latching Relay]: Safe for high power appliances. Supports heavy-duty devices like AC/heaters (25A/5500W), exceeding standard sockets (typically ≤16A). Zero holding power, maintains state without continuous power like normal relay. Explosion-proof, physical dual -coil structure eliminates arcing, >100,000 switching cycles, 95% energy saving vs traditional relays.
[Timer and Usage Limits]: Timer for scheduled ON/OFF, Daily/weekly automation. Scene Sync, Auto-adjust with sunrise/sunset. Energy Saver, Shut down heavy loads at peak rates. Usage limits for kWh Countdown, Auto cutoff at preset value. Safety Guard, Prevent device overburning (e.g. heaters), Budget Lock, Precise monthly cost control.
[Offline Data Logging]: Decade-Long Data Vault, 512MB MicroSD Card Standard (free with machine purchase). Full-Parameter Logging: Voltage/Current/Power/Rates/PF/Working Time/Events.
[Tuya & Smart Life App Ecosystem]: Dedicated Integration: Tuya & Smart Life Certified, Full-featured SDK implementation. Custom UI: Device-specific panels. Voice Ecosystem Connectivity: 3rd-Party Speaker Support, Works with Alexa/Google Home (user-linked).
[Over/Under Voltage Protection and Overload Protection]: The Over/Under Voltage Protection monitors the supply voltage and automatically disconnects power to safeguard equipment in case of abnormally high or low voltage, this feature can be combined with an Auto-Reclose function to automatically restore power once voltage returns to normal. The operating thresholds (trip points) for both protection functions are customizable by the customer.
[Summer/Winter (DST) dual-period time-of-use billing]: dual-period time-of-use (TOU) billing for summer and winter periods. Within each period, users can independently set peak, valley, and flat electricity rates (three-tier pricing structure). The device provides 24/7 automatic energy cost calculation, ensuring accurate billing year-round. Both the time ranges for the summer and winter periods and the corresponding peak, valley, and flat rates within each period are fully customizable by the customer to match local utility tariffs or individual needs.
[Screen Orientation Flip]: the function specifically designed to address display inversion issues caused by socket installation direction. Regardless of whether the socket is installed conventionally or inverted, users can adjust the screen content to an upright, readable orientation.
[2.0-inch TFT color display]: (320×240 QVGA) for clear, high-quality visuals. [PC (Polycarbonate) flame-retardant housing]: Premium material for non-ignition safety.
Customers say
Customers have mixed opinions about the smart plug’s functionality, with some saying it works well while others report it doesn’t work at all. The product receives mixed feedback about its quality, with some describing it as a quality product. The WiFi compatibility is also mixed, with one customer noting it integrates with SmartLife, while another reports issues with automatic pairing.
8 reviews for LP405 25A Heavy Duty Smart Plug Meter Sockets Industrial Energy Monitor Trip-Rate Billing, OVP/UVP/OLP Color Screen Magnetic Relay Offline Logging WiFi Tuya/Smart Life for AC/Heaters
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Dragon9 –
Useful little bugger!
There are a couple of these plug in meters, and this one, for design and function, is by far the better one. Integrates with SmartLife, a plus if you already have that. Useful statistics and full or partial resets. Worked quite a bit with technical support on some readings and design issues and they were very responsive and quick to fix! Future upgrades planned…
Christian D. –
Very good quality and propuse
Very good and quality product, you should do a two socket plug
P. Harley –
Major flaws.
Don’t bother. Poorly written code. The firmware was not properly debugger. Entering data into fields is a waste of time. Field entry for adding unit $ per kwatt does not work. Loose power and all accumulative data is lost. Amazon is not screening this crap like Wal-Mart. If it’s discounted it likely has a flaw inherent that doesn’t pose a safety problem but is a flaw that renders the product saleable but with limited use. Like this POC.
David L. Ellis –
I hope that you have perfect eyesight
The manual uses a 3 point font, and the app has even smaller font on my phone and does not allow zooming. Some menu items have low contrast colors, e.g., white on light blue, that make them even harder to read. The app also demanded access to my location as well as the expect Bluetooth. You are also required to create an account to use just about everything. The device failed to pair automatically. The app is the main reason I am rating this unit so low.The display on the unit is bright and easy to read. I cannot verify the readings as I have no calibrated standards, but the readings are similar to the nominal values on the heater I used to test the unit. At worst, they are “close enough”. I tried the voltage/current/wattage screen as that is what I am most interested in using.All I wanted was a remote sensor to monitor my sump pump. Is it too much to ask that we not give up our entire life story to every company? And why cannot these companies and seemingly all current graphics designers take into account that not everyone has the same eyesight as a 21 YO? If you have perfect eyesight, are tech savvy, and do not mind exposing your life to yet another company, the meter seems to work well.ADDENDUM: I finally found the button and sequence to pair the meter to my tablet. The information was hidden in the overview of the buttons. I still think that institutions that essential me to load the app and pair it are inadequate.I also find the time intervals between readings recorded in the app to be too long. I am trying to capture a 15 second event, and the app seems to only record over some indeterminate longer interval.
Bruce Senator –
Aulifants Electrical Monitoring Device Is A WINNER.
This unit I highly recommend for several reasons. First, it is rated for 120 Volts at 25 Amps, which is important as these devices are usually kept in place, under load, once installed.Second, once set up the interface between physical device and the app is excellent.The only issues are as follows;(1) Setup instructions for WiFi and Bluetooth need to be more specific, clear.(2) When we set the electrical rates depending on the time of day, we also need to be able to pre-set for time periods of the year.Electrical rates shift between Winter Rates (Oct – April) and Summer Rates (May – Sept).With the current setup, we have to manually change daily/hourly time rates twice a year.Doing this for multiple devices is burdensome and time consuming.Overall, this item is a winner.
AuxPowerUnit –
Good for remote power monitoring and on-off control.
I had a different brand of plug-in watt meter previously. Then I got this one because it allows remote monitoring via internet-connected apps. The meter plugs into a wall outlet, and my monitored device is plugged into the front of the meter. Data about the voltage, current, and wattage are sent via the internet to either of two free apps: Smart Home or Tuya Smart. Both apps allow me to remotely turn the monitored device on or off. The meter worked well when I tested it on my bench polisher. I anticipate trying it on heavier loads later.There were some minor problems with this meter which caused me to subtract one star. First, the power button on mine was stuck, even while new out of the box. It feels like some glue got under the dome switch. I was able to unstick the button by wiggling it back and forth many times. Second, the bottom of the case protrudes too far down, so this meter blocks the use of the second outlet on a typical dual outlet. Third, each cellphone app starts by connecting to the closest wi-fi network. But after connecting to the meter, the app insists on switching to a 5GHz connection. If 5GHz wi-fi is not available, the Smart Home App refuses to monitor this device. That is puzzling, because the data rate from this monitor is refreshed very slowly, about once every 4 seconds.
John O. –
Awesome Product!!!
Awesome product works great. I track the cost and hours of my pool pump running. Wifi enabled
Lawrence E. Elbert –
Great control for roof heating tape
I can control on/off of the heat tape from my phone from anywhere! I see exactly how much electricity it uses & when I input the power company costs per kwh I can see just how much I am paying to keep the ice off.