Electromechanical
Relays, switches, motors — things that move
Switches (toggle/push/slide/rotary/DIP)
Switch
A mechanical device that opens or closes a circuit by hand. Comes in many actions and contact arrangements for selecting, latching and routing signals or power.
Tactile / Push Button
Switch
A small momentary push button that closes only while pressed. The standard 'click' button for boards, keypads and resets.
Reed Switch
Switch
Two ferromagnetic contacts sealed in a glass tube that snap together when a magnet comes near. No power needed, no wear from a mechanism — the classic door/window sensor.
Relay (electromechanical)
Relay
An electrically operated switch: a small coil current magnetically flips heavy-duty contacts, letting a low-power signal control a high-power load with isolation.
Solid-State Relay (SSR)
Relay
A semiconductor-based switch that controls AC or DC loads without moving parts, using optocoupler isolation and a triac/MOSFET output.
Connectors & Headers
Connector
Electromechanical devices that join electrical circuits allowing disconnection, signal routing, or device attachment.
Terminal Block
Connector
A modular connector for joining individual wires without soldering, commonly used for secure wire-to-wire or wire-to-board connections in control panels and industrial applications.
DC Motor
Motor
A rotary electromechanical device that converts electrical energy into mechanical energy using direct current. The most common type of motor in hobby and industrial applications.
Stepper Motor
Motor
A motor that moves in precise, discrete steps when energized in sequence, ideal for position control without sensors.
Servo Motor
Motor
A motor that can be precisely positioned at specific angles using a control signal. Commonly used in robotics, RC vehicles, and automation.
Buzzer / Piezo
Transducer
A component that converts electrical signals into sound. Piezo buzzers use the piezoelectric effect to create a high-pitched tone.
Speaker / Microphone
Transducer
Transducers between electricity and sound. A speaker turns current through a coil-in-magnet into cone motion; a dynamic microphone is literally the same thing run backwards. Impedance and power matching make or break them.