There are 5V, 12V, or 24V relay options on the bottom of this page. The default relays shipped with this product are 5V.
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.
Trigger external loads like lamps, fans, home appliances, garage doors, and other things, in an easy way using this Relay Shield.
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
Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor.
This is our LT2-F NIST qualified security robot with an enclosed robot chassis with rear flippers/stabilizers, camera tilt system, custom controller, video console, and battery charging station.