01
Three-phase energy meter
View voltage, current, active power and power factor for each phase, plus total energy data.
GEYER SMART · ER4100WM · 2-IN-1
Three-phase consumption.Visible in real time.
A 2-in-1 smart device combining a three-phase Wi-Fi energy meter and voltage monitor, with live measurements, energy history and configurable electrical alerts for every phase.
2-in-1Energy meter · Voltage monitor
100 A / phase250 VAC · cosφ = 1
4 positions35 mm DIN rail
Live energy dataPer phase & total
Voltage monitoringConfigurable limits
CONNECTED ECOSYSTEM
Amazon Alexa
Google Home
Tuya Smart
Smart LifeMEASUREMENT · VOLTAGE MONITORING · AUTOMATION
Complete insight for every phase.
ER4100WM combines three-phase energy metering and voltage monitoring in one device, with a local LCD and remote access through GEYER Smart.
02
Voltage monitor
Monitor overvoltage, undervoltage and other configurable electrical conditions, with alerts when limits are exceeded.
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Energy & cost statistics
Review consumption history by day, month or year and manage energy cost information from the app.
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Schedules & automation
Create up to 30 programs per day, with weekly scheduling, countdown and automatic switch-off.
2-IN-1 · THREE-PHASE METER · VOLTAGE MONITOR
Energy measurement and voltage monitoring in one smart device.
GEYER SMART APP
Measurements, history and alerts in one place.
Monitor voltage, current, active power and power factor per phase, together with total energy data. Review history, create schedules and receive push notifications when configured limits are exceeded.
APPLICATIONS
Monitoring for three-phase installations.
01
HOME
Monitor household consumption and electrical values per phase remotely.
02
OFFICE
Keep essential three-phase data and voltage alerts accessible from the app.
03
HOLIDAY HOME / AIRBNB
Monitor consumption, predefined limits and alerts while away from the property.
04
SMALL BUSINESS
Track three-phase consumption and identify periods of increased energy use in a shop or workshop.
Suitability of the electrical system, required protection and conductor cross-section must be assessed by a qualified electrician, who must perform installation and wiring with the power supply isolated.
TECHNICAL SPECIFICATIONS
Designed for monitoring three-phase installations.
2-in-1 Wi-Fi energy meter and voltage monitor with local LCD, configurable supervision functions and mounting on a 35 mm DIN rail.
CEREDRoHS2 years
Input voltage100–240 VAC, 50–60 Hz
Rated current100 A per phase, at 250 VAC, cosφ = 1
Contact1NO (SPST-NO)
SystemThree-phase, L1 · L2 · L3 · N
Wi-Fi2.4 GHz
BluetoothYes
Mounting35 mm DIN rail, 4 positions
Dimensions76 × 93 × 75.3 mm
Operating temperature−10 °C to +60 °C
ProgramsUp to 30 programs per day
Shared usersUp to 20
MeasurementsVoltage, current, active power and power factor per phase, plus total energy data
NotificationsPush notifications
Warranty2 years
ComplianceCE · LVD · EMC · RED · RoHS
INSTALLATION & PAIRING
Three essential steps.
01
Installation
Mount on a 35 mm DIN rail and have L1, L2, L3 and N connected by a qualified electrician with the supply isolated.
02
App
Download GEYER Smart from the App Store or Google Play and connect the phone to a 2.4 GHz Wi-Fi network.
03
Pairing
Press and hold the Wi-Fi button for about 10 s until the indicator LED starts flashing rapidly, then add ER4100WM in the app.
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ELECTRICAL SAFETYSuitability of the electrical system, required protection and conductor cross-section must be assessed by a qualified electrician, who must perform installation and wiring with the power supply isolated.
WIRING DIAGRAM
Three-phase input and output.
Connect incoming L1, L2, L3 and N to terminals 5–8 and the corresponding outgoing conductors to terminals 1–4, according to the wiring diagram.
FREQUENTLY ASKED QUESTIONS
The essential answers.
Which app does ER4100WM use?+
The official app is GEYER Smart for Android and iOS.
Does it connect to 5 GHz Wi-Fi?+
No. ER4100WM connects exclusively to a 2.4 GHz Wi-Fi network.
Which values can be viewed per phase?+
The app displays voltage, current, active power and power factor for each phase, plus total energy data.
Does it provide energy history?+
Yes. Energy data can be reviewed by day, month or year.
Can alert thresholds be configured?+
Yes. Supervision and alert limits can be configured for multiple electrical conditions.
Who should install ER4100WM?+
Installation and electrical connection must be performed by a qualified electrician.
VIDEO
Product videos.
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Video content coming soon
TESTIMONIALS
Everyday experiences with ER4100WM.
Experiences from professionals and users of three-phase installations.
01“
I recommend it for homes with a three-phase supply because the customer can view consumption per phase and easily identify unusual loads or increased consumption.
GiorgosElectrician
02“
With ER4100WM I monitor my shop’s consumption from my phone and can easily identify when and where energy use increases.
NikitasShop owner
03“
I can now see in real time how much energy my home consumes and keep a consumption history. It helped me identify which appliances have the greatest impact on my bill.
DimitrisHomeowner
ER4100WM DOCUMENTATION
All product documents in one place.
PDF
DatasheetTechnical specifications
DOWNLOAD ↓
PDF
PDF
Quick GuideEssential installation and pairing steps
COMING SOON
ManualDetailed use and settings
DOWNLOAD ↓
PDF
Product SheetProduct overview and applications
DOWNLOAD ↓