# PumpSaver Plus: decoding the relay's infrared broadcast

> A protocol reference and Python decoder reconstruct the baseband infrared register broadcast of SymCom and Littelfuse PumpSaver Plus pump-protection relays. It maps 32-bit words to voltage, current, power, settings, counters and fault history, with sample captures and decoder tests.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/lizbit-official/pumpsaver-ir-protocol>
- Primary source: <https://github.com/lizbit-official/pumpsaver-ir-protocol/blob/e5bd53837a14451e127f6fe4f53b1eb261eda754/README.md>
- Catalog page: <https://awesomerea.org/resources/pumpsaver-ir-protocol-case/>
- Record JSON: <https://awesomerea.org/resources/pumpsaver-ir-protocol-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/pumpsaver-ir-protocol-case/index.md)

## Requirements & limits

- **Prerequisites:** A baseband IR edge capture is required; a 38 kHz demodulating receiver cannot capture this carrierless signal.
- **Prerequisites:** Python 3.10 or newer is required for the decoder.
- **Limits:** Several configuration registers and fault-code names remain candidates.
- **License:** MIT license.

## Primary sources

1. <https://github.com/lizbit-official/pumpsaver-ir-protocol/blob/e5bd53837a14451e127f6fe4f53b1eb261eda754/README.md>
2. <https://github.com/lizbit-official/pumpsaver-ir-protocol/blob/e5bd53837a14451e127f6fe4f53b1eb261eda754/PROTOCOL.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.