Feature: 1. HIGH ACCURACY CONFIGURE: Equipped with ZMPT101B series high accuracy voltage transformer and high accuracy operational amplifier circuit, which can easily realize 250V AC power signal acquisition 2. ACCURATE SAMPLE AND PROPER COMPENSATE: Equipped with accurate miniature voltage transformer, the module has the ability to accurately sample and properly compensate the signal 3. MEASURE WITHIN 250V AC VOLTAGE: The module can measure AC voltage within 250V, which can be adjusted according to the output analog quantity 4. SINE WAVE OUTPUT: This is a ZMPT101B voltage transformer module single phase AC active output voltage sensor module. The output signal is a sine wave, and the mid value (DC component) of the waveform is 1/2 VCC 5. EXCELLENT PERFOFMANCE: Made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stability Specification: Item Type: Voltage Transformer Module Power Supply Voltage: 5~30V Motherboard Size: Approx. 50 x 20mm / 1.97 x 0.79in. Package List: 1 x Voltage Transformer Module