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Product at a glance

We believe that an electricity meter does not need to have communications to be called smart. Our Liberty 1E meter makes prepayment user-friendly and convenient, by vending in money terms rather than units of electricity. Real-time consumption information is displayed in plain language, helping consumers to make decisions that will save money. Optional remote keypads enable consumers to enter vend codes and view information, even when the meter is in a hard to reach place.


  • Vend codes are in money, not kWh units.
  • Keypad on the meter for entering codes means there is no token/card to lose.
  • A ‘Friendly Credit’ option means no disconnection during evenings, weekends or public holidays.
  • Highly secure, encrypted vending.


Connection type Direct connected
Wiring configuration Single phase, single element, two wire
Voltage range 230 V AC (nominal)
Current range 5(30)A, 10(60)A or 20(80)A
Accuracy Active Energy MID Class B, Reactive Energy Class 2.0
Mains frequency 50 Hz ± 5%
Burden As per relevant standards
Contactor 100 A UC1
Standards MID Class B EN 50470-1,3; IEC62053-21, IEC62053-23
Dimensions (W x H x D) 125 mm x 193 mm x 48 mm
Terminals Cage clamp type
Weight 1 kg (approx.)
Enclosure Flame-retardant polycarbonate
Ingress protection IP 51
Insulation class Protective class II
Temperature -10 °C to +50 °C (operating)
-25 °C to +70 °C (storage)
Humidity 95% non-condensing
Tariff Slab, time-of-use (TOU)
Supports pending tariff structures
Display Liberty 1E: 9-character alphanumeric starburst
Keypad 12 key- 0-9, *, # for local entry of PAYG code and access to displays
PAYG functionality Credit and PAYG modes (meter maintains account and tariffs)
Display of current and historical cost of consumption data
Emergency Credit, with optional load limiting
Friendly Credit (avoids disconnection during unsocial hours, weekends or special days)
Debt recovery
Security Triple DES encryption
Local diagnostic port Optical IEC62056-21 (IEC1107) hardware-compatible port
Remote display RJ-11 port for connecting a keypad and display for user convenience