The FX12-Knock is analog amplifier for vibration sensors. It will amplify small signals from piezo and other low level sensors for reading by a 0-10V input.
If you use the analog output version, it can be run to a FX350 or other FX controller and drive all the logic you’d need. The SSR (solid state relay) version could open a maglock when a certain pressure is reached, but no further logic, latching, etc.
Pinout J2
| Pin | Function |
| G | Ground |
| A | Analog output signal 0-10V |
| B | Reserved for future use. Contact for details. |
| 5V | +5V Output |
| + | +12-24V Input |
| G | Ground |
Pinout J3
| Pin | Function |
| Ground | Piezo / Sensor – |
| 5V | +5V Output |
| A | Piezo / Sensor + |
| B | Reserved for future use. Contact for details. |