These are high quality sealed Single Pole - Double Through (SPDT) relays. This relay's coil is rated for 5V. The nominal operating current is 72mA so it will need additional circuity to close the relay with a microcontroller like an Arduino or SBC such as a Raspberry Pi or BeagleBone Black.
This is a High current driver that will take TTL signals from your Arduino, etc to drive the relays. It includes status LEDs for each input. 5V, 12V, and 24V relay options are available. This item replaces TE-010-405 and TE-010-412
Powered by the ULN2003 high current driver, this module gives you easy control of up to 7 relays using TTL logic from an Arduino, Beagle Bone, or Raspberry Pi. 5V, 12V, and 24V relay options.
This is powerful wheelchair motor. They make great heavy-duty robot motors. 250W 120RPM motors with 17mm keyed shaft output. They are sold individually and have an electric brake mounted on the back.
A ready to ship prebuilt tracked robot. It features IG42 122RPM Gear motors. Controller, battery, and charger included.