Electricity Meters

Available in three diferent certified brands

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Also available in the following two meter brands:

View ACTOM Brand  
  View EKHWESI Brand

Holley: Data Concentrator

Data Concentrator can communicate with software through GSM/PSTN network, or RS232. One DC can carry the energy meter nodes quantity up to 400~500pcs. Due to the geographical barriers or environment conditions, the communication distance between meters and data concentrator is very different.

For the purpose of extending the communication distance, each meter can act as a repeater up to 3 levels depth. DC has intelligent self learning ability to determine the best pathway to communicate with any specific meter. The concentrator manages meters and other devices on the downlink network and provides data transfers between these devices and the utility's System Software with uplink channel.

The main parameters of the concentrator:

  • Maximum capacity for energy meter is 500pcs
  • DC communicates with management system via GSM/PSTN/RS232 network, communicate baud rate is 9600bps.
  • DC has Real Time Clock. RTC error is less than 0.5s per day.
  • DC can freeze, read & save the meter data at setting time. It can save 31 days Daily Frozen Data of the meter (Up to maximum capacity), and 12 month´┐Ż monthly frozen data. Even the power off the data can remain for at least 6 month.
  • Parameters can be stored for 10 years when power is cut off suddenly.
  • Password protection assures the security of the data.

  PDF Format: Device Specs


LCD Functionality:

Segment/symbol on LCD Description
Main display for energy, tokens and instantaneous values
OBIS code
Remaining credit data indicator
UIU battery under voltage indicator
kWh, V, A, KW Composite unit
Tamper event alarm indicator
Relay open / closed indicator
Communication symbol, flashes when data exchanges underway
Reverse current indicator
Voltage detection indicator


  • Measurement of active (kWh), total/separated energy registers for import and export
  • Time-of-use metering with up to four tariffs and customized billing cycles
  • Precision internal real time clock (RTC) with backup long-life Li-battery
  • Polycarbonate case and IP54 protection
  • Nonvolatile memory for energy data
  • Large-character LCD information auto-scrolling display
  • Independent sealing of the meter body and terminal cover
  • Reverse energy flow detection with LCD alarm indicated
  • Immune to external magnetic interference, alarm in the display when detect the interference
  • Two communication channels. Local-and remote-reading ports.
  • PLC/GPRS modules for remote integration in advanced metering systems
  • Data readout by optical port according to IEC 62056-21 (IEC61107 protocol support)
  • DIN-SO pulse output for KWh, high-light LED indicated for accuracy test

LED Functionality:

LED Display Indicator status
Rate of consumption (Red LED)
Flashing Red LED indicates the rate of electricity consumption. A fast flash indicates high usage while a slow flash indicates low usage
Alarm/relay status/ communication (bi-colour LED)
RED: indicates relay disconnected (high priority) FLASHING RED: indicates tamper event occurred GREEN: MCU and UIU communicating
Remaining Credit Status (bi-colour LED)
GREEN: Remaining credit exceed the high credit threshold RED: Remaining credit below the high credit threshold FLASHING RED: Remaining credit below the lowlow credit threshold
FLASHING RED with BUZZER: Remaining credit below the critical credit threshold. Note: when the meter in the postpaid mode, LED is GREEN

Recharging the meter

  • After purchasing credit, the user will receive a 20 digit STS TOKEN
  • The STS TOKEN is entered into the meter using the UIU keypad
  • Entering the token, 10 seconds between inputting of consecutive digits is allowed. Exceeding this will result in the user having to restart the inputting process.
  • The back one space clear button allows errors to be corrected.
  • Once all digits have correctly being keyed in, the accept button transmits the token to the MCU meter
  • The meter configuration software can also be used to enter the token into the meter

On entry of the token, one of the following responses are received:

Display Description
Recharge successfully
Recharge credit is 132.50kWh
Recharge unsuccessful
Entered TOKEN has previously being entered
Recharge unsuccessful
Entered TOKEN code is correct but this recharge credit plus remaining credit exceeds maximum credit threshold
Recharge unsuccessful
Entered TOKEN older than the oldest TOKEN in the meter log (Overdue TOKEN)
Recharge unsuccessful
Entered TOKEN incorrectly entered
Recharge unsuccessful
The security key of the Entered TOKEN has expired

Measurement and Billing:

  • Active energy (import and export).
  • Remaining credit.
  • Instantaneous Measurement (V, I, kW, f, power factor).


  • Metering Unit:
  • - LED indicators provide visual indication for active power consumption rate, credit status, load switch status, alarms, mains power and "communication to CIU" status.
  • Customer Interface Unit (CIU):
  • - Large LCD with language independent icons.
  • - Supports 3 display modes: scrolling display, manual display and power-off display.
  • - Display contents are configurable.
  • - LED indicators provide visual indication for credit status and alarm buzzer.

Anti-Tamper Features:

  • Meter cover open.
  • Terminal cover open.
  • Energy reverse.
  • Magnetic influence.
  • Long or short terminal covers in Bakelite or Transparent material.

Event Logging:

  • Time stamp and event identification are logged for:
  • - Tampering.
  • - Overvoltage and Under Voltage.
  • - Overload.
  • - Power failure.
  • - Programming.


  • IEC62055-31, IEC62052-11, IEC62053-21, IEC 62056-21, IEC 62056-61, IEC62055-41, IEC62055-51, IEC62055-52.
  • STS 101-1, STS 201-1.
  • Eskom standard: 240-76625601.

Accuracy Class

  • Class 1.0/Class B(EN50470-3).


  • Rated Current Ib = 5(60)A.
  • Max. current Imax = 100A.
  • Starting Current = 0.004Ib.


  • Reference Voltage Un = 230V.
  • Voltage Range = 0.7Un to 1.2Un.
  • MaximumWithstand Voltage = 440V (48 hrs).

Reference Frequency

  • 50Hz ∓ 2%.

RTC Control

  • Clock accuracy (23oC) = less than 0.5s / day.

Temperature Range

  • Operation =-25oC to +70oC.
  • Storage = -40oC to +70oC.
  • Humidity = up to 95%.

Insulation Tests

  • AC voltage test = 4 kV @ 50 Hz for 1 min
  • Impulse Voltage test = 6 kV @ 1.2|50 ms.

Dimensions (h x w x d)

  • 220mm x 130mm x 86mm.


  • Current circuit = =4VA.
  • Voltage circuit = =2W/10VA.

Rate Indicator

  • 1000 imp/kWh.

Communication to CIU

  • PLC - Multi frequency channels. 150m range dependant on noise environment.


  • Multi-function LCD with backlighting.


  • Electrostatic discharges (Contact discharges) = ∓8kV.
  • Electrostatic discharges(Air discharges) = ∓15kV.
  • Surge immunity test = ∓4kV.
  • Fast transient burst test = ∓4kV.
  • Electromagnetic RF fields = 10V 150kHz~80MHz.

Ingress Protection

  • IEC 60529 = IP 54.


  • 1.5kg.


  • RTC maintained for at least 2 years in case of any power failure.
Customer Interface Unit (CIU):

User Interface

  • 12 digit keypad with audio feedback.
  • Braille tactile on center "5" key to assist the visually impaired.


  • Multi-function LCD with backlighting.


  • Wall mounting.


  • 230V 50Hz AC power (Default).
  • Battery: 4xAAA batteries (to allow recharge when credit is depleted).

Ingress Protection

  • IEC 60529 = IP 52.

Dimensions (h x w x d)

  • 148mm x 82.5mm x 37.5mm.


  • 0.5 kg.

Overall Dimension

Pre-paid Options:
Purchase Prepaid

With a variety of online, mobile, ATM and EFT purchasing options, we've made it even easier for you to buy your prepaid electricity whenever and however you want to.

Replace Meter Card

If you need us to replace your pre-paid meter card, simply fill in the pdf form and e-mail it to our offices. Your request will be processed as soon as we receive your proof of payment.

Meters On Sale

Meter Prices are subject to change at any time and some meters are limited to stock on hand. If out of stock, Lead time for meter manufacturing usually takes about 6 - 8 weeks.

Wiring Diagram

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