DDSY422 Electronic single-phase prepaid energy meterDetailed product description：

The DDSY422 fully electronic single-phase prepaid energy meter is a new product manufactured using advanced solid-state integration technology and SMT process. Its characteristics are high precision, high overload, high sensitivity, and low power consumption. It is an AC single-phase active energy meter with a rated frequency of 50HZ for metering, and realizes the pre order function of buying before using. The international standard universal RF card is used for data transmission, and its functional indicators comply with all technical requirements in IEC1036, GB/T17215, and GB/T18460 standards.

The main functional features of DDSY422 electronic single-phase prepaid energy meter are:
1. Apply computer network management, purchase electricity first and then use it, one meter, one card, dedicated card, no power loss after card loss, replenish card before use, and encrypt the data inside the card.  
2. The maximum operating power can be limited within the rated current range.  
3. The electric card can transmit data bidirectionally, read back the remaining power, accumulated electricity consumption in the meter, total number of power purchases, meter constants, and other information.  
4. The energy meter automatically calculates the user's electricity consumption and can provide warning prompts. Remind users to purchase electricity in a timely manner when the remaining power in the table is less than the preset alarm power. Overload alarm and power outage. The user can continue to use electricity by inserting the card. When the power is zero, the power will automatically trip and cut off.  
5. LCD display shows total consumption, remaining power, and electricity usage status

DDSY422 Electronic Single phase Prepaid Energy Meter Main Technical Parameters:

model	DDSY422
standard	GB/T17215-2002 ，GB/T18460-2001
Precision level	Level 1.0
power consumption	＜1W,4VA
rated voltage	220V
rated current	5(20)A，10(40)A，15（60），20（80）
Working voltage range	0.8Un～1.2Un, Extreme working voltage range: 0.7Un~1.3Un
Working environment temperature	Working temperature (℃): -25~+60, extreme working temperature (℃): -40~+70
Working environment humidity	≤85%

DDSY422 electronic single-phase prepaid energy meter