Tachtrol Plus
The TACHTROL PLUS is an extension of the TACHPAK and the TACHTROL tachometer product lines. While this device has no intrinsic tachometer function, it is used as a remote display for the TACHPAK 30 and the TACHTROL 30. 

The TACHTROL PLUS also serves as a gateway with both TACHPAK and TACHTROL instruments for secure, remote programming and alarm reset. Use it as a hub for multiplexing up to seven additional displays with a single tachometer up to 125 feet away. The front panel operation and display are identical to that of the TACHTROL 30.