This board is RPM meter which was already assembled and tested. It is upgrade version to command relay to turn on if the RPM reach to max RPM setting value or command relay to turn on if the RPM below mix RPM setting value.

Technical information:
- Power Supply 12VDC
- 2 mode To measure RPM 1 to 9999 RPM range and 10 to 99990 RPM by jumper on board
- Resolution 1 PPM for 1 - 9999 RPM mode and 10 RPM for 10-99990 RPM mode
- 4 Digit Seven Segments display ( Red color )
- Can measure RPM with used the photo reflective infrared sensor. ( comes in package ) or receive the signal from other sensor.
- Build in 2 Relay, first Relay will turn on if the RPM reach to Max RPM setting value, the second Relay will turn on if the RPM is lower than Min RPM setting value
- 3 Buttons to set mix / max RPM
- mix / max RPM setting will be recorded in EEPROM, No need to re-program when power lost.
- Distance between the photo reflective infra-red and reflector 1-3cm.
- Comes with English manual

We sale only the board as in the photo, no power supply ( AC/DC adapter )

**Free Tracking Number**