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Voltage Transformer Module Single Phase AC Active Output Voltage Sensor Module Features: On-board High Precision Operating and Discharging Circuit of Voltage Transformer, Precision Sampling and Proper Compensation of Signal. Analog voltage output: the module can measure AC voltage in 250V, and the output analog quantity can be adjusted. The analog voltage output "module can measure AC voltage within 250, and the output analog quantity can be adjusted. Power supply voltage 5-30V. Specifications: Material: alloy Size: 50.5*20*21.5mm Color: blue Package Included: 1 x Voltage Transformer Module Notes: 1. Please allow 1-3cm measure error. 2. The color of the actual items may slightly vary from the above images due to different computer screen, thanks for your understanding.