The FH CTDK13BRZ-E EZ Tone Door Chime doesn't have a built-in volume adjustment feature since it's a mechanical chime1 . However, you can try the following to increase the volume: Ensure Proper Installation: Make sure the chime is securely mounted to the door and frame. A loose installation can reduce the sound. Check the Striker: Ensure the magnetic striker is hitting the chime bar firmly. Adjusting its position might help produce a louder sound. Use a Harder Surface: Placing the chime on a harder surface can amplify the sound compared to mounting it on a softer material like wood.