SQWCHLOCK Contactless Toilet Lock Sensor

Name: Touch Free Contactless Toilet Lock Sensor - C Prox Ltd
SKU: SQWCHLOCK
Price: 88.04 GBP
Availability: InStock

SKU: SQWCHLOCK Brand: C Prox Ltd Inc Quantek

£88.04 ex VAT

The toilet lock sensor is clean and contact free for users to lock or unlock a toilet door.

Activated by the approach of a hand within up to 70mm, the sensor triggers red and blue LED indicators, providing clear visual confirmation of the door’s locked or unlocked state.

Powered by 12–24V DC, this hardwired sensor is ideal for integration into accessible toilet locking systems, particularly where hygiene and compliance are essential.

The label is treated with a high performance antimicrobial additive, which actively destroys 99.9% of germs including E. coli, MRSA, Salmonella, Legionella, and the flu virus. It also inhibits black mould, biofilm, and fungal growth, helping to reduce odours, staining, and surface degradation over time.

Key Features:

Touch Free Operation
Activates with a hand movement up to 70mm – no contact required.
Red & Blue LED Feedback
Instantly communicates door status to the user.
Continuous Antimicrobial Protection
Actively inhibits harmful microbes, mould, and fungi, even if touched.
Reduces Maintenance & Odours
Prevents staining, black mould growth, and degradation from microbial build up.
Durable & Hygienic Surface
Easy to clean acrylic label with antimicrobial protection.
12–24V DC Power Input
Compatible with most access control and door automation systems.

How do our toilet sensors work?

When the door is unlocked you can enter manually or operate the external sensor for assisted entry.

Once inside the cubicle, activate the internal sensor which will lock the door.
When you are ready to exit, activate the internal sensor again to unlock the door with assisted exit.

Our kits can be incorporated with our remote control & hands free systems. Contact us for further details or to discuss your individual needs.

▪ Sensor beeps when touched but doesn’t lock the system

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.

▪ Touch sensor doesn’t beep when touched

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.

▪ System locks with no one inside

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.

▪ Automatic door doesn’t open when it should

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.

▪ System goes RED but mag lock does not engage

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.

▪ Touch sensor LEDs aren’t lit

Solution:

Verify that the solid/flashing LED jumper on the control board is in place.
Refer to the wiring diagrams section.
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.

▪ Touch Sensor LEDs Flashing (Want Solid Light)

Solution:

Change the jumper position on the control board.

▪ Door re-locks instantly after unlocking

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.