H1 "Hybrid" Tibbits
The H1 form factor is used when it is unsafe or undesirable to interconnect M1 and C1 modules via a Tibbo Project PCB (or any other host board).
Examples of such cases are high-voltage and high-frequency (radio) circuits.
H1 devices can have up to four status LEDs on the M1 side.
H1 Tibbits have no pins on their C1 "section":
Pins on the M1 section have the standard positioning, except that not all of pins 1-5 might be present, because the M1 and C1 sections of hybrid devices are interconnected directly.