Product · single-phase energy meter

IEMTR-EM165-W

A single-phase, single-channel energy meter one DIN module wide. It measures a circuit through a 100 A current transformer and reports over Wi-Fi to the platform. Class B accuracy, the same class as a billing meter.

iemtr-em165-w · single phase shipping
photo: meter on din rail, front
Voltage
230 V AC
Current
100 A
Accuracy
Class B
class b readings · your label · your platform
Class B
en 50470-3 · class 1 iec 62053-21
100 A
330 mv ct input
One module
18 mm · din rail
What it is

Class B metering on a single DIN module

One module wide, Class B accurate and reporting over Wi-Fi — so a circuit can be metered without a cable run back to a panel. Where there is no usable network on site, it pairs with the IESG-R250, which provides the Wi-Fi and the route to the platform.

  1. Measures one single-phase circuit through a solid-core or split-core CT
  2. Reports voltage, current, active power, power factor and frequency
  3. Records import, export and total active energy separately
  4. Sends readings to the platform over Wi-Fi at an interval you choose
  5. Holds totals in non-volatile memory through a power cut
Data path
  1. circuit · 100 a ct
  2. iemtr-em165-w · wi-fi
  3. iot core · mqtt over tls
  4. your dashboards and alerts

How it is used

typical deployment · this unit lit
deployment · three circuits on one board
3 Wi-Fi meters reporting through a IESG-R250 to the platform site · distribution board wi-fi 4g IEMTR-EM165-W circuit 1 · 100 a ct IEMTR-EM165-W circuit 2 · 100 a ct IEMTR-EM165-W circuit 3 · 100 a ct IESG-R250 4g router · wi-fi ap IOT CORE mqtt over tls YOUR DASHBOARDS alerts · api
Three single-phase meters on one distribution board, each on its own 100 A CT, joining the Wi-Fi network of an IESG-R250 that carries the readings out over 4G. The lit unit is this product; the others are the same meter on the neighbouring circuits.
Scenario 01 · landlord sub-metering

Split the bill between tenants

A managed building with one supply and several tenants. One meter per tenant circuit, Class B accurate, so the split is fair and defensible. Where invoices must rest on a legally approved meter, ask us for the MID-certified build of the same unit.

pairs with IESG-R250 · IEMTR-EM4423-W on the incomer
Scenario 02 · single asset

Watch the one circuit that matters

A compressor, a cold room, a heat pump. One meter on its feed shows when it runs, how hard and for how long, which is usually enough to see a fault a week before it becomes a call-out.

pairs with IESG-R250 · or the site's own wi-fi
Scenario 03 · existing network

No gateway when the site already has Wi-Fi

Where the building's Wi-Fi reaches the board and lets devices out to the internet, the meter joins it directly and nothing else is needed. Where it does not, or where site IT would rather not be involved, the IESG-R250 gives it a network of its own.

alternative IEMTR-EM165-L where wi-fi cannot reach

Delivered as yours

our name appears nowhere on it

Branding and finish

Your logo and product name on the meter label and the packaging, and your details on anything the end customer reads.

Software and firmware

Reporting interval, units and platform credentials set before it ships, plus a dashboard on your domain rather than a generic portal.

Documentation and support

Installation instructions and a CT sizing guide in your name, written for the electrician who will actually fit it.

Specification

class b · en 50470-3
Type
single phase · single channel · bidirectional
Voltage
230 V AC nominal · 120–275 V range
Frequency
50 or 60 Hz
Current
100 A primary · 330 mV CT input
Accuracy
Class B (EN 50470-3) · Class 1 (IEC 62053-21)
Standards
EN 50470-1 and -3 · IEC 62053-21 · CE
Measured
V · A · W · PF · Hz · +kWh · -kWh · ΣkWh
Consumption
0.5 W · 2 VA
Environment
-25 to +55 °C · storage -40 to +70 °C
Enclosure
18 × 104.5 × 88 mm · 100 g · ABS+PC · 1 DIN module
Wi-Fi MQTT Modbus RTU S0 pulse Split-core CT Solid-core CT

Metering a site you do not own?

Tell us how many circuits and whether the readings have to be billable. We will confirm the CT sizing, set the reporting up and quote per unit.