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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Laison
  • Model Number: DDSY127
  • Display Type: Digital Only
  • Phase: Single Phase
  • Measuring Energy Range: 999999.9
  • Accuracy Class: Class 1
  • Output Voltage: 120V, 220V, 230V, 240V
  • Operating Temperature: -10c~+75c

Packaging & Delivery

Packaging Details Cartons
Delivery Time About 45 days


Prepaid Energy Meter (DDSY127)
1. IC card
2. Single Phase


Prepaid Energy Meter  (DDSY127)



The prepaid energy meter with anti-tamper function has extend terminal cover, anti-tamper measurement chipset AD7751 instead of AD7755, and have extra one current transformer except shunt, so there is two measurement loops and the meter will measure energy consumption correctly even current is reversed, details of four situations as following.

Single phase electronic prepayment meter complies with IEC 62053-21. The meter adopts micro-electronic technology, has high precision, low power consumption.

The meter will remind the user to purchase the electricity by alarm when the electricity remained is limited, and cut off the power supply automatically when the electricity use up. It's also able to limit maximal consuming power, anti-tamper function is optional. Each meter match with one memory card, and the meter can exchange the data with card bi-directionally through the card read device. User won't lose electricity even he lost the user card, because a renewed card is acceptable.
1) Energy display by LCD
2) Limit maximal consuming power
3) Automatic switch off power when overload
4) Warning when electricity insufficiency
5) Cut off the power when electricity use up
6) Operation indicated by pulse LED




Rated Voltage120V, 220V, 230V, 240V
Reference frequency50Hz or 60Hz
Basic Current
(Maximum Current)A
5(20)10(40)      10(60)A20(80)

Applicable StandardIEC 62053-21
Service Lifetime10 years
Accuracy ClassClass1, Class2
Working Temperature-10c~+75c
Starting currentClass 1≤ 0.004Ib; Class 2≤ 0.005Ib.
WorkingVoltage Range0.7~1.2Un
Power consumption≤ 2W, 5VA
    Over voltage protection6kV
Relative humidity≤ 95%





Hangzhou Laison Technology Co., Ltd. 
Add: Zhejiang University National Science Park,
No. 525 Xixi Road, Hangzhou, China

Tel: +86 571 89715425

Fax: +86 571 89715426 

Gmail mailbox: Laisontech.alex (suffix @gmail.com)

Skype: qpmz12345

Website: www.laisontech.com



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