Yes, you can indeed use the Bosch Security D192G as a replacement for the D192C notification appliance module. The D192G is designed to be a direct replacement for the D192C, offering compatibility and seamless integration with existing systems. You shouldn’t encounter any major compatibility issues during the replacement process. Just make sure to follow the manufacturer’s installation guidelines and consult your system documentation for any specific configuration settings or adjustments that may be necessary for your setup. If you have any further questions or concerns during the replacement process, feel free to reach out for assistance.