AH-GST-001B is a portable rechargeable gauss meter developed by our company. It has a built-in 3.7V lithium battery and is compatible with ordinary 5V chargers or USB interfaces. The battery is compatible with ordinary 5V chargers or USB interface charging. It can measure magnetic field intensity in the range of 0 to 10 Tesla and can measure magnetic field intensity in the range of 0 to 10 Tesla. It is low-cost and can be used for traditional magnetic field detection, magnet detection, and portable application scenarios.