A low-voltage electromagnetic device operating on alternating current (AC) at 24 volts, with a frequency of either 50 or 60 Hertz, is commonly utilized in residential and commercial heating, ventilation, and air conditioning (HVAC) systems, as well as other control applications. These components are frequently available for purchase at large home improvement retailers. For instance, a furnace might employ such a device to control the gas valve, opening or closing it based on a signal from the thermostat.
The utilization of these devices offers several advantages, including enhanced safety due to the low voltage, simplified wiring, and compatibility with a wide range of control systems. Their widespread availability and relatively low cost contribute to their prevalence in various applications. Historically, such devices replaced higher voltage components, promoting safer and more efficient control mechanisms in automated systems.
