Switch 12mm Red NO

The Switch 12mm Red NO is a round red push button switch for 12 mm panel holes with normally open (NO) contacts. The circuit stays open at rest and closes while the button is pressed, then springs back when you let go. It is a simple control for start, reset, horn or doorbell functions on project boxes, control panels and Arduino or ESP32 projects.

Switch 12mm Red NO Specifications

• Type: momentary push button (spring return)
• Contacts: normally open (NO)
• Mounting: panel mount in a 12 mm hole
• Colour: red
• Terminals: 2 solder pins

Switch 12mm Red NO Applications

• Start and reset buttons on control panels
• Doorbells, horns and buzzers
• Inputs for Arduino, ESP32 and Raspberry Pi projects
• Project boxes, test jigs and school projects

What's in the Box

• 1 × 12 mm red push button switch, NO

Tip: To use it as an Arduino input, wire one pin to a digital pin set to INPUT_PULLUP and the other to GND; the pin reads LOW while the button is pressed. Add a short software debounce for clean readings, and keep it to low-voltage circuits unless the switch rating is confirmed for mains.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.