DDS-DSM11:  RS485 Electronic Single Phase Energy Meter
（with relay）

Specifications and Parameters:

1.        Related voltage：220V /120V

2.        Basic current：2.5（10）A；5（40）A； 10（40）A；

15（60）A； 20（80）A

3.        Related Frequency：50Hz

4.        Accuracy class：Class 1.0, 2.0

5.        Start current：0.4%lb(class 1.0)、0.5%lb(class 2.0)

6.        Potential: With anti-potential logic design

7.        Clock accuracy (day error): ≤0.5S(23℃);

Battery capacity:≥1000mAh;

Memory period after power failure: ≥10 years(with a new battery);

Memory period as replacing battery: ≥1h

8.        Power consumption：≤2W/10VA(total consumption)

9.        Enviromental condition：

standard working temperature： -20℃～55℃

Limited working temperature: -40℃～70℃

Relative humidity: ≤85%

10.    Weight：about 0.6kg

11.    Outshape size：160mm×140mm×70mm

 Functions and Features:

1.        Long-term active energy measurement without any calibration.

2.        Adopt LSI(large-scale IC)and SMT(surface mounting technology)which means advanced technology and simple structure.

3.        Characteristics of long Life and high reliability exist in every electronic component.

4.        LCD display with wide temperature scope,5 Integers & 1 Decimal,

5.        Meter reading and programming can be achieved with HHU or PC via 485 port or infrared ray.

6.        Sample the current on neutral line and phase line at the same time to prevent one-fire-one-ground electric larceny root and branch.

7.        Build-in magnetism-reserved relays can control the switch via 485 port or infrared ray.

8.        Power break indicator.

9.        Meter reading via infrared communication port.

10.    Energy test pulse output interface.

11.    Automatically switch calendar, time and leap year once set up at the first time (optional).

12.    Store historical consumption data (optional).