5Pcs ZMPT101B Voltage Transformer Module Single phase AC Voltage Transformer Module 5 30V Output Voltage Sensor Signal Acquisition ZMPT101B Power Supply Voltage Module workwarehouse Product Feature: Socket cap screws B0CPZZC4FM Product Feature: Socket cap screws are threaded fasteners that have a cap head with an internal socket drive for installing in areas with limited side clearance and makes it not easy to slip Especially for applying with wireless charger devices 5Pcs ZMPT101B Voltage Transformer Module Single phase AC Voltage Transformer Module 5 30V Output Voltage Sensor Signal Acquisition ZMPT101B Power Supply Voltage Module and the potentiometer can adjust the amplification ratio (amplification range is 0 100 times)