- RI-21A
- Coto Technology
- SWITCH REED MAG SPST 18-32AT
- RI-21AA
- Coto Technology
- Interface Misc, SPST, Dry Reed Switch, hermetically sealed in a gas-filled envelope
- RI-21AAA
- Coto Technology
- Interface Misc, SPST, Dry Reed Switch, hermetically sealed in a gas-filled envelope