



WCPCB Disabled Toilet System PCB Control Board
PCB board for disabled toilet locking system. The PCB controls the lock, touch switches and the automatic door operator.
- 12-24Vdc
- Controls the disabled toilet system
- Connections for internal and external touch switches, including LED indicators
- Timed volt free output for automatic door operation
- Magnetic lock output
- Anti-prank contact to prevent misuse
- Contact for emergency break-glass and key switch connection
- PCB dimensions: 100 x 100mm
- Supplied with self adhesive mounting pillars


Additional information
Weight | 0.1 kg |
- 12-24Vdc
- Controls the disabled toilet system
- Connections for internal and external touch switches, including LED indicators
- Timed volt free output for automatic door operation
- Magnetic lock output
- Anti-prank contact to prevent misuse
- Contact for emergency break-glass and key switch connection
- PCB dimensions: 100 x 100mm
- Supplied with self adhesive mounting pillars
Architrave, round & single gang sensors
🔹Swing door - normally unlocked
Square sensors:
Solution:
-
Link out the door switch terminals on the control board.
-
If this works, inspect the mag lock reed switch/monitoring wiring and armature plate alignment.
-
Ensure the mag lock provides a normally closed (NC) signal when the door is shut.
- See troubleshooting document for more information.
Note: On RTR mag locks the black & green flying leads connect to the door switch terminals on the WCPCB.
Step-by-step checks (de-power system for 10 seconds after each step):
-
Ensure the sensor is securely mounted—not dangling or held in hand.
-
Check the jumper next to the sensor relay is fitted and making properly.
-
Use a multimeter to check voltage across +V and 0V at the sensor.
- The touch sensor and LEDs use separate supplies – LEDs being lit doesn’t mean the touch sensor side has power.
-
Confirm 0V is in the correct terminal, not the REM terminal.
- Disconnect the sensor from existing cabling and connect it directly to the controller on a short piece of cable to rule out cable issues.
Solution:
-
Ensure mag lock contacts are wired into the door switch terminals on the control board.
-
Adjust the potentiometer on the internal touch sensor to switch for 3 – 5 seconds.
-
Reduce the sensitivity of the internal touch sensor, especially if emergency lighting or hand dryers are nearby.
-
Remove any excess cable inside the touch sensor back box.
-
Re-terminate internal touch sensor connections.
- Consider fitting the MULTI-TIMER reset relay.
Solution:
-
Remove the two wires from the C and NO door activation terminals on the control board and join them together.
-
If the door still doesn’t open, the problem lies with the operator—contact the supplier/manufacturer.
Solution:
-
Check the position of the override keyswitch on the external sensor.
-
Ensure the break glass hasn’t been pressed.
-
Inspect the lock fuse.
-
Link out the NC & KS/BG terminals on the control board.
-
If the system works after linking, but your keyswitch and break glass are correctly positioned, there is likely a cable break.
-
-
Use a multimeter to check for voltage at the mag lock.
-
If voltage is present but the lock isn’t engaging, the lock is faulty.
-
Solution:
-
Verify that the solid/flashing LED jumper on the control board is in place.
-
If using square sensors, the LED wires should connect to the larger outer PCB (see page 10 of the manual).
-
Use a multimeter to check voltage at the touch sensor LED terminals.
-
The LEDs have a separate power supply from the sensor itself—if the sensor beeps but LEDs don’t light, check for a cable break.
-
-
Remove the sensor from the wall and connect it directly to the control board using a short cable to rule out wiring issues.
Solution:
-
Change the jumper position on the control board.
Solution:
-
Adjust the potentiometer on the internal touch sensor to switch for 3 – 5 seconds.
-
This may occur if the mag lock contact is going open & closed circuit while the touch sensor is still beeping.
-
Check armature alignment and ensure the door does not judder when opening.
-
If the issue persists, replace the mag lock or install a standard magnetic door contact instead.
Yes!
-
Multiple Door Assist or Touch to Lock/Open sensors can be wired in parallel.