Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: SONOFF's clean product image of the DUALR3 Dual Relay Two Way Power Metering Smart Switch (DUALR3) on its own product page; the unit's label prints "Model: DUALR3".No sellers found.
Printed as "Model: DUALR3 DUALR3 DUALR3 Lite".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: variant selector
Documented
Printed as "Dual Relay Two Way Power Metering Smart Switch"; "【Dual-Channel Power Metering – Track Energy Usage】 Each channel independently measures voltage, current, and power consumption, helping you manage and optimize ".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: product title (in-wall placement not stated in words; behind-wall-switch use implied by "Two-Way Wall Switch Control")
Documented
Printed as "Frequency 802.11 b/g/n".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: Product page and documents as quoted
Documented
Maximum switched load printed as "Resistive Load 3300W/15A/Total, 2200W/10A/Gang".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Maximum switched load printed as "Resistive Load 3300W/15A/Total, 2200W/10A/Gang".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Printed as "Certified Compliance TUV, CE, FCC".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: Product page and documents as quoted
Documented
Printed as "Operating Temperature -10ºC-40ºC".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Printed as "Dual Relay Two Way Power Metering Smart Switch"; "【Dual-Channel Power Metering – Track Energy Usage】 Each channel independently measures voltage, current, and power consumption, helping you manage and optimize ".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: product title (in-wall placement not stated in words; behind-wall-switch use implied by "Two-Way Wall Switch Control")
Documented
Printed as "Frequency 802.11 b/g/n".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: Product page and documents as quoted
Documented
Maximum switched load printed as "Resistive Load 3300W/15A/Total, 2200W/10A/Gang".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Maximum switched load printed as "Resistive Load 3300W/15A/Total, 2200W/10A/Gang".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Printed as "Certified Compliance TUV, CE, FCC".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: Product page and documents as quoted
Documented
Printed as "Operating Temperature -10ºC-40ºC".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: spec table
Documented
Published claims and calculations, not independent test results.
Archived copy captured on 2026-10-29.
Location: Page 1, models; PDF page 17 (printed page 16), specifications
Retrieved
SONOFF's own 23-page user manual for the DUALR3 and DUALR3 Lite, served from its store's file host (manual V1.3; the specification table on printed page 16 lists hardware and software versions V1.0). Printed page 10 labels power monitoring and overload protection as DUALR3 only. No issue date is printed. Read with Apple Vision OCR committed beside this configuration (the PDF has no text layer). Compliance marks and FCC/IC identifiers in it are the maker's claims, not checked with the issuers. Manufacturer claims, not independent tests.
Archived copy of a document published by SONOFF. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what SONOFF published. Original address: https://cdn.shopify.com/s/files/1/0742/9963/8001/files/User_Manual_DUALR3_DUALR3_Lite_V1.3.pdf?v=1748328414. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 1da3f8811f81f7bd9ebb1bba8afcce1708e238aec313c2a636a5b34ef9e417a8
Archived copy captured on 2026-10-12.
Location: Product page
Retrieved
SONOFF's own product page, captured October 12, 2026 with the paced research fetcher. Manufacturer statements, not independent tests.
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived copy of a document published by SONOFF. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what SONOFF published. Original address: https://cdn.shopify.com/s/files/1/0742/9963/8001/files/User_Manual_DUALR3_DUALR3_Lite_V1.3.pdf?v=1748328414. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 1da3f8811f81f7bd9ebb1bba8afcce1708e238aec313c2a636a5b34ef9e417a8
Printed as "2-Year Hassle-Free Warranty".
Official product page: SONOFF product page: SONOFF DUALR3 Dual Relay Two Way Power Metering Smart Switch (captured October 12, 2026) Checked · Earlier documentLocation: store service bar beside Add to cart (store policy wording)
Documented
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Manufacturer SKU DUALR3
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