Model: TO-H
Product name: single-phase digital display meter
Measuring voltage range: AC40-500VAC
Frequency:0-99Hz
Measurement accuracy: 1.0
Installation method: rail
Storage temperature: -25℃~+70℃
Rated frequency: 50/60Hz
Package Included
1 × Frequency meter
The TOMZN TO-H, a specialized single-phase digital display meter, is engineered to deliver accurate and real-time AC frequency monitoring, tailored for residential, commercial, and light industrial single-phase electrical systems. As a compact, mini modular gauge, it combines functionality with space efficiency, making it an ideal choice for users seeking to track frequency stability without sacrificing panel space or simplicity.
At its core, the TO-H excels in frequency measurement: it covers a wide range of 0-99Hz, ensuring compatibility with global standard power grids (50Hz and 60Hz) while also detecting abnormal frequency fluctuations that could indicate grid instability or equipment malfunctions. To ensure reliable operation across diverse voltage environments, it supports an AC voltage range of 40-500V, seamlessly adapting to common grid voltages like 110V and 230V—eliminating the need for additional voltage adapters. With a measurement accuracy of 1.0 class, the meter provides precise frequency data, a critical factor for maintaining the performance of frequency-sensitive devices such as motors, pumps, and electronic equipment.
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