GSM-IN-JZ001 is a GSM interference cancellation module manufactured by Guangzhou Gaoke Communication Technology Co., Ltd. This device is used to reduce interference caused by the GSM signal. It is an auxiliary feature that can be used in conjunction with other GSM system components to increase signal clarity and strength. The device works by detecting and canceling out GSM signal interference, allowing for more consistent and reliable communication service. The GSM-IN-JZ001 module has a frequency range of 800 MHz to 1900 MHz and features low power consumption.