
Daughter board · rev 1.3
CHT + Parking Brake
Cylinder head temperatures and the parking brake, for the Standard board.
Buy now · Coming soon
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What it does
A small second board in the electronics box. It reads up to four cylinder head temperature sensors (thermocouples, fitted under the spark plugs like a washer) and the parking brake switch, and shows them on the dash.
Fitting neither? Leave it out: M.O.S.S. works without it.
- One thermocouple module per cylinder you want to watch, up to four; any module works in any socket
- A converter module reads the parking brake switch
- BRAKE SET light: on when the brake is set, blinking if the wire is broken
- Three spare analog inputs (0 to 3.3 V) for future senders
What it connects to
| Plug | Connects to |
|---|---|
| AUX | The Standard breakout board's AUX plug, on a short cable |
| CYL 1 to CYL 4 | Each cylinder's Type K thermocouple, into its module |
| PARK BRAKE + SPARE | The parking brake switch (with a resistor at the switch, so a broken wire shows), plus three spare inputs |
Works with
- Works with
Standard breakout boardRequired: plugs into its AUX socket
The S.M.B.B. and S.M.B.B.-H have head temperatures and the brake input built in.
The other boards
M.O.S.S. is in development and bench testing; details may change before release.





