19D-203 meter is prepaid kwh meter, suit for single phase residential electricity metering. It has prepaid recharge function and remote monitor and control function. It has a built-in relay, you can remote control turn off when user balance is zero.
19D-203 supports max 100A direct access, saves the cost of CT and avoid extra wiring work. Built-in interfaces provides pulse and RS485 Modbus RTU outputs.