Sonoff Dual Relay Module T2
Universal two-channel smart relay module for automated lighting and motorized window coverings.
Universal two-channel module for lighting and motorized curtains. Compact construction allows seamless placement behind standard wall switch plates or within overhead motorized roller housing, delivering robust decoupled control with zero cloud latency.
Hardware Specifications
| Communication Protocols | Matter over Thread, 2.4GHz Wi-Fi IEEE 802.11 b/g/n, Local BLE 5.2 |
| Operational Voltage | 100-240V AC 50/60Hz or 24-30V DC Low-Voltage Input |
| Max Continuous Load | 10A Max per Channel / 15A Total Resistive (Motor Mode: 2.5A) |
| Enclosure Material | Self-Extinguishing Polycarbonate (UL94-V0 Fire-Retardant) |
| Operating Temperature | -10°C to +40°C (14°F to 104°F), 5%–95% RH non-condensing |
System Topology & Architecture
The Sonoff Dual Relay Module T2 deploys independent channel optocouplers with physical interlock logic when switched into motorized curtain mode. It executes microsecond-level hardware zero-crossing detection to extend internal relay contact lifespan under demanding inductive motor spikes and LED driver loads.
Mesh Relay Node
Acts as an active protocol repeating station extending localized IoT range across domestic switchboards.
Zero-Crossing Sync
Prevents inrush voltage arcs on capacitive driver circuits during high-frequency switching operations.
Local Key Storage
Stores network security tokens on hardware-isolated non-volatile microchips for offline safety.
Installation Guidelines
Mount the compact module directly behind standard mechanical wall switches or inside ceiling junction backboxes with at least 45mm internal clearance depth. It accepts momentary switches, dual-throw rocker keys, or bi-directional motor direction leads without requiring external pull-up resistors.
- 01Isolate line breaker upstream prior to touching any backplate electrical terminals.
- 02Connect neutral and phase wiring following standard 1.5mm² solid-core copper recommendations.
- 03Push configuration button once to broadcast commissioning beacon over localized radio mesh.
Request Hardware Dispatch
Submit project requirements to arrange direct hardware allocation and deployment specifications.
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