1X4 BLUE KEY MATRIX MEMBRANE SWITCH PLASTIC KEYPAD KEYBOARD

A 1X4 Blue Key Matrix Membrane Switch Plastic Keypad Keyboard is a type of input device commonly used in electronic devices. It consists of a thin, flexible plastic sheet printed with a matrix of conductive traces and contact pads. The membrane switch is designed to be a low-profile, cost-effective alternative to mechanical switches.

The "1X4" designation means that the keypad has one row and four columns of keys arranged in a matrix pattern. The blue color may indicate a particular aesthetic choice or may have been chosen for visibility or branding purposes.

Each key on the keypad corresponds to a specific combination of the row and column traces, and pressing a key connects these traces to complete a circuit, sending a signal to the device's controller. The membrane switch is activated by pressing the key, which causes the conductive contact on the underside of the key to push down on the corresponding contact pad on the membrane, completing the circuit.

Membrane switches are commonly used in a variety of applications, including remote controls, medical equipment, industrial control panels, and consumer electronics. They are often preferred for their durability, low cost, and low profile, making them suitable for applications where space and weight are a concern.

Specification :

• Matrix: 1 row x 4 columns
• Number of keys: 4
• Switch type: Membrane switch
• Contact material: Conductive silver ink or carbon
• Actuation force: Typically 100g or less
• Contact resistance: Typically 200 ohms or less
• Insulation resistance: Typically 50 megaohms or more
• Operating temperature: -40°C to +85°C
• Operating voltage: 24 VDC or less
• Contact bounce: Typically less than 5ms
• Lifespan: Typically 1 million or more actuations per key.