MidNite Solar MNLSOB-T1-AC Little SOB AC rapid shutdown transmitter

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Key specs

Units
Device type
AC Transmitter
Official installation manual
Sources

Page 1 captions an image "AC Transmitter"; Page 4 prints "AC Transmitter: Connect black wires to 90-300 VAC 50-60 HZ", and the page 8 and page 9 drawings label an AC transmitter "90-300 VAC 3 Watts". Part of the Little SOB transmitter and receiver rapid shutdown system; the transmitter signal keeps the receivers connected.

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 1, product image captions; page 5, Ratings; page 4

Documented

Power input
90-300 VAC 50-60 Hz 3 Watts
Official installation manual
Sources

Printed as "MNLSOB-T1-AC 90-300 VAC 50-60 Hz 3 Watts" in the page 5 Ratings. Removing this power initiates rapid shutdown (page 5 Note 4 and the wiring drawings).

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 5, Ratings; page 4

Documented

Communications
Encoded 484.84 kHz tone inductively coupled into the string PV+ line
Official installation manual
Sources

Printed as "The transmitter generates a signal which is inductively coupled into the string PV+ line. The signal consists of an encoded 484.84 kHz tone." Page 5 says either the plus or minus string wire may go through the transmitter output coil, but not both. A signalling method, not a statement of compatibility with any other product.

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 1, System Function

Documented

All specs3
Device type
AC Transmitter
Official installation manual
Sources

Page 1 captions an image "AC Transmitter"; Page 4 prints "AC Transmitter: Connect black wires to 90-300 VAC 50-60 HZ", and the page 8 and page 9 drawings label an AC transmitter "90-300 VAC 3 Watts". Part of the Little SOB transmitter and receiver rapid shutdown system; the transmitter signal keeps the receivers connected.

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 1, product image captions; page 5, Ratings; page 4

Documented

Power input
90-300 VAC 50-60 Hz 3 Watts
Official installation manual
Sources

Printed as "MNLSOB-T1-AC 90-300 VAC 50-60 Hz 3 Watts" in the page 5 Ratings. Removing this power initiates rapid shutdown (page 5 Note 4 and the wiring drawings).

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 5, Ratings; page 4

Documented

Communications
Encoded 484.84 kHz tone inductively coupled into the string PV+ line
Official installation manual
Sources

Printed as "The transmitter generates a signal which is inductively coupled into the string PV+ line. The signal consists of an encoded 484.84 kHz tone." Page 5 says either the plus or minus string wire may go through the transmitter output coil, but not both. A signalling method, not a statement of compatibility with any other product.

Official installation manual: MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N) Rev 10-349-1 REV N · Checked · Earlier document

Location: Page 1, System Function

Documented

Published claims and calculations, not independent test results.

Documents

1 on file
  • PDF
    MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N)OfficialMidNite SolarOfficial installation manual
    Source details
    Revision
    10-349-1 REV N
    Revision date
    Not stated

    Archived copy of the PDF obtained from MidNite Solar's own site on 2026-10-30, copied unchanged.

    Location: Page 1, title, MNLSOB System Overview (red compatibility line) and System Function; pages 2 and 3, model lists; page 5, Ratings and Application Notes; page 10, limited warranty; footer 10-349-1 REV N

    Retrieved

    MidNite Solar's own ten-page Little SOB (Shut Off Box) Installation and Use Guide, linked on MidNite's Instructional Documentation page as "10-349-1 REV N Little SOB Instructions"; every footer prints 10-349-1 REV N and no issue date is printed (PDF metadata March 11, 2021 and server last-modified March 12, 2021 are file provenance, not a printed date). Every page was read rendered. Page 1 prints in red "NOT COMPATIBLE WITH DC CHARGE CONTROLLERS!", a line the PDF text layer omits, while its System Function text mentions "the inverter or charge controller"; both are kept, unresolved. Pages 2 and 3 list the models MNLSOB-T1-600, MNLSOB-T1-AC, MNLSOB-R1-600 and MNLSOB-1000; pages 5, 7 and 9 print MNLSOB-R1-1000 for the 1000 volt receiver. The English wire range (page 2, "14-10 gauge AWM") and French wire range (page 3, "calibre 14-1/0") differ and are kept as printed. Page 5 prints the ratings and application notes; page 10 this edition's limited warranty (MNLSOB ten years), kept as dated history. The NEC 2014 and 2017 690.12 statements are dated maker claims, not certifications. Installation steps are the maker's, not recorded as facts. Obtained by Alternative Research from MidNite Solar's own site on 2026-10-30T12:34:47Z (HTTP 200) and copied unchanged into this archive. Manufacturer claims, not independent tests.

    Archived copies

    Archived copy of a document published by MidNite Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

    Archived backup 10-349-1 REV N · 2.71 MB

    Archived copy, unaltered, kept as a record of what MidNite Solar published. Original address: https://www.midnitesolar.com/pdfs/10-349-1_REV_N_Little_SOB_Instructions.pdf. Copyright and takedown

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    10
    Embedded creation date
    Embedded modification date

    Embedded dates are file metadata, not independent proof of publication.

    SHA-256: 5878dc69bd24923f388ac9f7a7c29cdada2346f06e6aacb7af8003cb64ff224e

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Archived documents

MidNite Solar Little SOB (Shut Off Box) Installation and Use Guide (10-349-1 REV N)

Archived copy of a document published by MidNite Solar. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup 10-349-1 REV N · 2.71 MB

Archived copy, unaltered, kept as a record of what MidNite Solar published. Original address: https://www.midnitesolar.com/pdfs/10-349-1_REV_N_Little_SOB_Instructions.pdf. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
10
Embedded creation date
Embedded modification date

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 5878dc69bd24923f388ac9f7a7c29cdada2346f06e6aacb7af8003cb64ff224e

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Model history

Model identity

Model
MNLSOB-T1-AC

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