// 01

Description

A two-position DIP switch in the classic red housing. Each slide closes one contact between the pin on the top row and the pin directly below it, so a board can be configured by hand - I2C address bits, mode select, boot options, enabling a feature - without jumper caps that get lost.

What it does

Hardware configuration: address, mode and option bits read by a microcontroller at start-up
Breadboard experiments: a clean way to switch an input between HIGH and LOW
Test fixtures and panels that need settings a user cannot change by accident

Specifications

Specification	Value
Type	DIP switch, slide actuator, SPST
Positions	2
Pins	4 (2 per switch)
Pitch	2.54 mm between pins, 7.62 mm between rows
Colour	Red body, white actuators
Contact rating	25 mA at 24 V DC (switching), 100 mA carry
Contact resistance	50 mΩ max
Body size	About 7 × 10 × 5.5 mm (2 positions)
Mounting	Through-hole, fits a DIP-4 footprint and breadboards
Operating temperature	-20 to 70 C
Sold as	Per piece

Wiring with an Arduino

Switch pin	Connect to	What it does
Top row, position 1	Arduino digital pin (for example D2)	Input read by the sketch
Bottom row, position 1	GND	Pulls the pin LOW when ON
Top row, position 2	Arduino digital pin (for example D3)	Second option bit
Bottom row, position 2	GND	Pulls the pin LOW when ON

Use pinMode(pin, INPUT_PULLUP) on each input. The pin then reads LOW when the switch is ON and HIGH when it is OFF.

// 02

Specifications

Type DIP switch, slide actuator, SPST

Positions 2

Pins 4 (2 per switch)

Pitch 2.54 mm between pins, 7.62 mm between rows

Colour Red body, white actuators

Contact rating 25 mA at 24 V DC (switching), 100 mA carry

Contact resistance 50 mΩ max

Body size About 7 × 10 × 5.5 mm (2 positions)

Mounting Through-hole, fits a DIP-4 footprint and breadboards

Operating temperature -20 to 70 C

Sold as Per piece

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