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OpenEnergyMonitor emonTx3 (emonTx3)
Model: emonTx3 · SKU: emonTx3
Prepared Nov 12, 2026
Common specifications
| Device type | Not documented |
|---|---|
| Max switched load (A) | Not documented |
| Max switched load (W) | Not documented |
| Measurement channels | 4Source [1] |
| Current sensors | 100 (CT 1-3); 19 (CT 4) ASource [1] |
| Current rating | Not documented |
| Voltage range | Not documented |
| Accuracy | Not documented |
| Communications | 433 MHz radio; optional ESP8266 WiFi adapterSource [1] |
| Display | Not documented |
| Power input | AC-AC adapter; or 3 x AA batteriesSource [1] |
| Mounting | wall-mount optionSource [1] |
| Safety listing | Not documented |
| Weight | Not documented |
| Dimensions | Not documented |
| Enclosure volume | Not documented |
| Warranty term | Not documented |
All recorded specifications
| Communications | 433 MHz radio; optional ESP8266 WiFi adapterDocumented claim ConditionsPrinted as "WiFi option: It is possible to use an emonTx with a ESP8266 WiFi adapter to provide WiFi connectivity.". Location: Product page and documents as quoted Printed as "WiFi option: It is possible to use an emonTx with a ESP8266 WiFi adapter to provide WiFi connectivity.". Location: Product page and documents as quoted |
|---|---|
| Current sensors | 100 (CT 1-3); 19 (CT 4) ADocumented claim ConditionsPrinted as "CT 1-3 are standard 100A / 24KW max CT inputs (@240V)". Location: Product page and documents as quoted Printed as "CT 1-3 are standard 100A / 24KW max CT inputs (@240V)". Location: Product page and documents as quoted |
| Measurement channels | 4Documented claim ConditionsPrinted as "4x CT Sensor inputs for single-phase AC electricity monitoring designed for use with the 100A SCT-013-000 CT sensor". Location: Product page and documents as quoted Printed as "4x CT Sensor inputs for single-phase AC electricity monitoring designed for use with the 100A SCT-013-000 CT sensor". Location: Product page and documents as quoted |
| Mounting | wall-mount optionDocumented claim ConditionsPrinted as "Wall-mount option". Location: Product page and documents as quoted Printed as "Wall-mount option". Location: Product page and documents as quoted |
| Operating temperature | -40 to 40 °C-40 to 104 °F convertedDocumented claim ConditionsPrinted as "Operating Temperature Temperature -40C +40C +85C". Location: docs Technical, Electrical characteristics table (Min / Recommended Max / Absolute Max) Printed as "Operating Temperature Temperature -40C +40C +85C". Location: docs Technical, Electrical characteristics table (Min / Recommended Max / Absolute Max) |
| Power input | AC-AC adapter; or 3 x AA batteriesDocumented claim ConditionsPrinted as "Can be powered by a single AC-AC adaptor (DC PSU not required)". Location: Product page and documents as quoted Printed as "Can be powered by a single AC-AC adaptor (DC PSU not required)". Location: Product page and documents as quoted |
Warranty
Certificate records
No records documented.
Sources and revisions
- OpenEnergyMonitor product page: emonTx3 (captured October 12, 2026)Official product page · Checked https://docs.openenergymonitor.org/emontx3/overview.html
- OpenEnergyMonitor docs: System Overview (navigation lists Main System and Older Hardware)Official product page · Checked https://docs.openenergymonitor.org/overview.html
- emonTx3 docs: TechnicalOfficial product page · Checked https://docs.openenergymonitor.org/emontx3/technical.html