
Three Phase Four Wire Smart Sts Keypad Prepayment Electricity Energy Meter. Prepayment Control: Allows users to load electricity amount in advance with keypad interface for active energy metering. Multi-Communication: Supports infrared, RS485, G3-PLC, GPRS, and RF meter reading for flexible data exchange. Anti-Tamper Safety: Features buzzer warnings for low battery, cover opening, magnetic tamper, and phase errors. Load Protection: Programmable load threshold disconnects user power if current exceeds set limits for 1 minute. High Accuracy: Active energy accuracy class 1 and reactive energy accuracy class 2 for precise measurement. Customization Options: Offers full customization, minor customization, and flexible options from samples or designs. Robust Certification: Certified by RoHS, ISO, and UL standards ensuring quality and safety compliance. Manufacturer Direct: Direct from manufacturer with 23 years export experience and 12 R&D engineers.