HAL202JQ-K

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Magnetic sensors and switches are two different types of devices that are often used in various applications. Magnetic sensors detect the presence of a magnetic field, while switches are used to detect changes in the direction of the magnetic field. The HAL202JQ-K is a two-channel solid-state switch that is designed to detect changes in the direction of a magnetic field.

The HAL202JQ-K consists of two reed switches in a single package. The reed switches are constructed from a ferromagnetic material that is sensitive to magnetic flux. The switch contacts are usually constructed from a silver alloy. The reed switches are located in a sealed package in order to protect them from moisture and other environmental contaminants. The HAL202JQ-K has two sets of fixed make contacts, which can be used to detect the presence of a magnetic field or the change in its direction.

The main application of the HAL202JQ-K is in alarm and security systems. The switch can be used to detect a magnetic field with a certain strength or to detect a change in its direction. It can also be used to detect the presence of a metal object, such as a safe or a door. The switch can be used to trigger an alarm or to open or close a door or window. The switch can even be used to detect the presence of a car in a parking lot.

The working principle of the HAL202JQ-K switch is based on a simple magnetic field detection principle. When a magnetic field exists, the switch contacts close, thus triggering an alarm or other action. When the direction of the magnetic field changes, the switch opens, thus signaling a change in the magnetic field. The switch also works when the strength of the magnetic field is decreased or increased.

The HAL202JQ-K can also be used as a temperature sensor. The switch has a temperature range of -25°C to +75°C, and it can be used to detect the temperature of a certain environment. This makes it an ideal choice for use in industrial settings, where the temperature of the environment must be monitored.

The HAL202JQ-K switch is a reliable and robust device that is suitable for a wide variety of applications. Its two sets of reed switches make it ideal for detection of a magnetic field or its change in direction, as well as detection of temperature changes. The switch is a cost-effective option for many alarm and security systems, as well as for temperature monitoring in industrial settings.

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