High-reliability passive keyboards utilizing a direct row-column switch matrix wiring scheme. Designed without onboard controllers or active microchips, delivering zero-latency, firmware-free raw coordinates via robust FPC tails directly to customer PLCs, microcontrollers, or host systems.
Designed to deliver direct pinout versatility, instant keystroke scanning, and chemical resistance for custom processing boards.
No onboard active microprocessors or firmware. Key contacts are routed as passive row-column loops, offering absolute immunity to computer crashes.
Easily scanned by custom host CPUs, PLCs, industrial controllers, or microcontrollers using column-row strobe scanning loops.
Equipped with flexible printed circuits (FPC) tails, polyester ribbon cables, or headers compatible with industry-standard ZIF sockets.
Direct physical contact closure means absolute speed. Ideal for critical alarms, emergency shuts, and fast entry trigger systems.
Since there are no active silicon chipsets to freeze or overheat, the passive keypad operates flawlessly from -45°C to +85°C.
Uses polyester or polycarbonate graphic overlays to completely shield the switch loops from water sprays, dust, oils, and grease.
Keetronics standard matrix keyboards deliver clean, hardware-direct connectivity for proprietary HMI boards and industrial PLCs. By routing raw key coordinates along physical row and column conductors, we eliminate active chipsets, firmware vulnerabilities, and signal delays. These passive keypads are highly customizable, featuring membrane snaps, metal domes, or rubber keycaps, making them the default choice for access terminals, vending systems, and CNC machinery controllers.
Raw copper or silver trace grids printed on polyester sheets that overlap to create open electrical contact points.
Flexible printed connector tail extending from the keypad, allowing direct plugin into host PCB ZIF sockets.
Direct electrical contact when key is pressed, forming a temporary short circuit between row and column pins.
Chemical and scratch-resistant top sheet that protects the copper or silver matrix circuit from fluid damage.
Customize lighting, feedback options, and surface detailing.