> For the complete documentation index, see [llms.txt](https://docs.bituo-technik.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bituo-technik.com/download-center/electrical.md).

# Electrical Monitoring Devices

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**Updated:** 2026-04-25
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{% tab title="Datasheets" %}

## SPM Series - Miniature Energy Meters

<table data-full-width="false"><thead><tr><th width="138">Model</th><th width="305.5555419921875">Description</th><th width="139.4443359375">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SPM01 FLEX</strong></td><td>1-Phase Flexible Energy Meter (63A)</td><td>V3.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SPM01-FLEX-All_Datasheet_BT_EN_V3.1_202602.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM02 FLEX</strong></td><td>3-Phase Flexible Energy Meter (63A)</td><td>V3.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SPM02-FLEX-All_Datasheet_BT_EN_V3.1_202602.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM01 MCBM</strong></td><td>1-Phase MCB-Mounting Meter</td><td>V3.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SPM01-MCBM-All_Datasheet_BT_EN_V3.1_202602.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM02 MCBM</strong></td><td>3-Phase MCB-Mounting Meter</td><td>V3.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SPM02-MCBM-All_Datasheet_BT_EN_V3.1_202602.pdf">⬇️ PDF</a></td></tr></tbody></table>

## SDM Series - Compact Energy Meters with Clamp CTs

<table><thead><tr><th width="142.11114501953125">Model</th><th width="295.4444580078125">Description</th><th width="138.7779541015625">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SDM01 Combo</strong></td><td>3-Phase Meter with Clamp CTs</td><td>V2.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SDM01-All_Datasheet_BT_EN_V2.1_2602.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SDM02 SP</strong></td><td>Split-Phase Meter with Clamp CTs</td><td>V2.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SDM02-All_Datasheet_BT_EN_V2.1_2602.pdf">⬇️ PDF</a></td></tr></tbody></table>

## SRS Series - Smart Relay Switches

<table data-full-width="false"><thead><tr><th width="141.66668701171875">Model</th><th width="299.111083984375">Description</th><th width="135.3333740234375">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SRS01 1PM</strong></td><td>1-Channel Smart Relay Switch with Built-in Power Measurement(16A)</td><td>V1.1 (2026/02)</td><td><a href="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTmsWivaZjkubbVKrCezC%2Fuploads%2FHGN7612Z5AGr5L899iJY%2FSRS01-1PM-All_Datasheet_BT_EN_V1.1_2602.pdf?alt=media&#x26;token=f9f68562-e3a7-476f-a9a3-f19d378656a6">⬇️ PDF</a></td></tr><tr><td><strong>SRS01 2PM</strong></td><td>2-Channel Smart Relay Switch  with Built-in Power Measurement (2x10A)</td><td>V1.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/02/SRS01-2PM-All_Datasheet_BT_EN_V1.1_2602.pdf">⬇️ PDF</a></td></tr></tbody></table>

## Accessories & Expansions&#x20;

To be added soon&#x20;
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{% tab title="User Guides" %}

## SPM Series - Miniature Energy Meters

<table data-full-width="false"><thead><tr><th width="148">Model</th><th width="323.6666259765625">Description</th><th width="151.888916015625">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SPM01 FLEX</strong></td><td>1-Phase Flexible Energy Meter (63A)</td><td>V3.1.3 (2025/09)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2022/11/SPM0102-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V3.1.3_20250920.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM02 FLEX</strong></td><td>3-Phase Flexible Energy Meter (63A)</td><td>V3.1.3 (2025/09)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2022/11/SPM0102-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V3.1.3_20250920.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM01 MCBM</strong></td><td>1-Phase MCB-Mounting Meter</td><td>V3.1.3 (2025/09)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2022/11/SPM0102-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V3.1.3_20250920.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SPM02 MCBM</strong></td><td>3-Phase MCB-Mounting Meter</td><td>V3.1.3 (2025/09)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2022/11/SPM0102-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V3.1.3_20250920.pdf">⬇️ PDF</a></td></tr></tbody></table>

## SDM Series - Compact Energy Meters with Clamp CTs

<table><thead><tr><th width="148.11114501953125">Model</th><th width="325.4444580078125">Description</th><th width="144.7779541015625">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SDM01 Combo</strong></td><td>3-Phase Meter with Clamp CTs</td><td>V1.1.1 (2025/10)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2022/11/SDM01-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V1.1.1_20251011.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SDM02 SP</strong></td><td>Split-Phase Meter with Clamp CTs</td><td>V2.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2024/11/SDM02-TWTZEWUZ-All-in-One_User-Guide_EU6Languages_V1.1.1_20250920.pdf">⬇️ PDF-IEC</a><br><a href="https://www.bituo-technik.com/wp-content/uploads/2024/11/SDM02-UL-User-Guide_V0.1.1_2020924.pdf">⬇️ PDF-UL</a></td></tr></tbody></table>

## SRS Series - Smart Relay Switches

<table data-full-width="false"><thead><tr><th width="149.66668701171875">Model</th><th width="328.111083984375">Description</th><th width="140.3333740234375">Version</th><th>Download</th></tr></thead><tbody><tr><td><strong>SRS01 1PM</strong></td><td>1-Channel Smart Relay Switch with Built-in Power Measurement(16A)</td><td>V1.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2026/04/SRS01-1PM_User-Guide_202603.pdf">⬇️ PDF</a></td></tr><tr><td><strong>SRS01 2PM</strong></td><td>2-Channel Smart Relay Switch  with Built-in Power Measurement (2x10A)</td><td>V1.1 (2026/02)</td><td><a href="https://www.bituo-technik.com/wp-content/uploads/2024/11/SRS01-2PM_User-Guide.pdf">⬇️ PDF</a></td></tr></tbody></table>

## Accessories & Expansions&#x20;

To be added soon&#x20;
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For 3D Assets, Certificates and DoC, please contact our support team <support@bituo-technik.com>