MidNite 12V Shut Off Box Transmitter

MidNite Solar 12V Shut Off Box Transmitter


MidNite Solar MNLSOB-T1-600 12V SOB (Shut Off Box) Transmitter and Rapid Shutdown System


The MidNite SOB is a simple to install, low cost rapid shut down system designed to comply with 2014 as well as 2017 NEC. The MNLSOB system was designed to work with grid-tied Inverters.  At this time, it does not work with charge controllers.

The system uses a receiver at the module that wires in just like an optimizer and a transmitter that is installed in or near the inverter. The installer does not need to install any other wiring between the transmitter and receiver. The system is fail safe, if the receiver does not sense the keep alive data stream from the transmitter, it turns off and opens the circuit.

  • A transmitter is placed inside a grid tie inverter wiring compartment
  • The PV positive wire runs through the transmitter core to induce asignal in the PV wire
  • Transmitter requires 12-16 vdc
  • Tested to 4000 feet round trip of pv wiring

Owner's Manuals

User Guide

Spec Sheet