- Tibbit Block #03-1 2Channel Low-Power Relays
- Relays rated for 1A/30V
- Power: 5V - Consumes 60mA
- Two red LEDs connected to two relay control lines
The Tibbit Block #03-1 2Channel Low-Power Relays are blocks of prepackaged I/O functionality housed in brightly colored rectangular shells. It is the Tibbit blocks that give the Tibbo Project System (TPS) its flexibility.

They are rated for 1A/30V. To activate a relay, set the corresponding control line LOW. When left unconnected, control lines default to HIGH (and, hence, relays are off). Combine this Tibbit with terminal block devices — #20 (nine terminal blocks) or #21 (four terminal blocks).