Description
Ensure clear user instruction and reliable momentary control with the MK K4878P WHI ‘Press’ Switch. Part of the iconic Logic Plus collection, this switch provides a tactile, retractive action—returning to its original position after being pressed—making it perfect for non-latching electrical applications.
Precision Engineering & Clear Labeling:
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Permanent ‘PRESS’ Marking: The rocker is clearly laser-printed with “PRESS,” providing intuitive guidance for users. This makes it ideal for public or commercial spaces where the switch function (such as a door release or a timed light trigger) must be immediately obvious.
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Retractive (Momentary) Action: This is a 2-way single-pole switch that can be wired as either “normally open” (push to make) or “normally closed” (push to break). It only completes the circuit while the button is being held down.
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Versatile Application: While frequently used as a high-quality door bell push, its 10A rating and 2-way capability make it suitable for triggering stairwell timers, pulse-controlled relays, or as a manual override for PIR occupancy sensors.
The Logic Plus Advantage:
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Antimicrobial Protection: Manufactured from a high-grade thermoset material, the faceplate naturally inhibits the growth of bacteria (including MRSA, E. Coli, and Salmonella). This is particularly important for a “press” switch, which is designed for frequent physical contact.
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Low Profile Design: The switch features the signature Logic Plus chamfered top edge and rounded corners, allowing it to sit discreetly and stylishly against any wall surface.
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Installer-Friendly: Features top-access terminals with backed-out captive screws, ensuring a fast and secure installation even in shallow back boxes.
Product Specifications
| Feature | Details |
| Brand | MK Electric |
| Model | K4878P WHI |
| Series | Logic Plus |
| Current Rating | 10 Amp |
| Voltage Rating | 250V AC |
| Switch Type | Retractive / Momentary (2-Way) |
| Legend | PRESS |
| Number of Gangs | 1-Gang |
| Material | Urea Formaldehyde (Antimicrobial) |
| Dimensions | 86mm x 86mm |
| Back Box Depth | 16mm Minimum (25mm Recommended) |
| Standard | BS EN 60669-1 |





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