STS keypad prepaid energy/water/gas meter is a keypad type, automatically connection or disconnection prepaid energy/water/gas meter. It can be top up with SanfranPay vending software directly and communicate with AMI system via LORA-RF or PLC module(Smart type can work with wireless communication modules of NB-IoT/4G/3G/GPRS). The meters are comply with STS standard, can be widely used for counting the electricity consumption of users over a period of time.