Devices that can switch the current flow on and off in one circuit using the current flow in another circuit.
Power Relays, Over 2 Amps @ 30 VDC
An electromechanical device which turns a large load on or off through the use of a smaller control signal. The contacts on these devices have a rating of 2 amps or higher.
Signal Relays, Up to 2 Amps @ 30 VDC
An electromechanical device which turns a large load on or off through the use of a smaller control signal. The contacts on these devices have a rating of 2 amps or less.
Time Delay Relays
An electromechanical device that turns a large load on or off through the use of a smaller control signal. These devices have some sort of built in circuit used to control events (initiation or triggering of the relay) using time.
I/O Relay Modules
Standardized pluggable devices used in I/O systems for monitoring or controlling systems or acquiring signals. Device in this family convert a voltage input to a logic level signal.