Shelly Plus 2PM UL
Device Identification
- Device name: Shelly Plus 2PM UL
- Device model: SNSW-002P15UL
- Device SSID: ShellyPlus2PM-XXXXXX
Short Description
The Shelly Plus 2PM UL is a UL-certified, compact 2-channel smart switch with power measurement and cover control. It enables remote control of electrical appliances via smartphone, tablet, PC, or home automation systems. The device operates standalone on a local Wi-Fi network or can be managed through cloud-based home automation services.
It supports remote access, control, and monitoring from any location with internet connectivity, provided the device is connected to a Wi-Fi router and the Internet.
Designed for retrofit installations, it fits into standard electrical wall boxes, behind power outlets, light switches, or other space-constrained locations.
The device features an embedded Web Interface for configuration, monitoring, and real-time control.
Main Applications
- Residential
- MDU (Multi Dwelling Units – apartments, condominiums, hotels, etc.)
- Light Commercial (small offices, retail stores, restaurants, gas stations, etc.)
- Government/Municipal
- University/College
Integrations
Amazon Alexa Supported Capabilities
- Yes
Google Smart Home Supported Traits
- Yes
Samsung SmartThings Supported Capabilities
- Yes
Simplified Internal Schematics
Device Electrical Interfaces
Inputs
- 2 switch/button inputs on screw terminals: S1 and S2
- 3 power supply inputs on screw terminals: 1 N (+) and 2 L (Ʇ)
Outputs
- 2 relay outputs with integrated power measurement, accessible via screw terminals
Add-on Interface
- Shelly proprietary serial interface
⚠ CAUTION! High voltage is present on the add-on interface when the device is powered. Exercise caution during installation and maintenance.
Connectivity
- Wi-Fi
- Bluetooth
Safety Features
- Overheating protection
- Overvoltage protection
- Overcurrent protection
- Overpower protection
- Obstacle detection (cover mode)
- Safety switch (cover mode)
Supported Load Types
- Resistive (incandescent bulbs, heating devices)
- Capacitive (capacitor banks, electronic equipment, motor start capacitors)
- Inductive with RC Snubber (LED drivers, transformers, fans, refrigerators, air conditioners)
User Interface
Inputs
- One (Reset) button
- Press and hold for 5 seconds: Enables Device Access Point and Bluetooth connection
- Press and hold for 10 seconds: Performs factory reset
Outputs
- LED (monocolor) indicator
- AP enabled, Wi-Fi disabled: 1 sec ON / 1 sec OFF
- Wi-Fi enabled but not connected: 1 sec ON / 3 sec OFF
- Connected to Wi-Fi network: Constantly ON
- Cloud enabled but not connected: 1 sec ON / 5 sec OFF
- Connected to Shelly Cloud: Constantly ON
- OTA (Over-the-Air Update): ½ sec ON / ½ sec OFF
- Button pressed and held for 5 seconds: ½ sec ON / ½ sec OFF
- Button pressed and held for 10 seconds: ¼ sec ON / ¼ sec OFF
Note: The LED states are prioritized in order. Later states override earlier ones.
Specifications
| Type | Value |
|---|---|
| Physical | |
| Size (H×W×D) | 37 × 42 × 16 mm / 1.46 × 1.65 × 0.63 in |
| Weight | — |
| Mounting | Flush mounting |
| Screw terminals max torque | 0.25 Nm / 2.2 lb-in |
| Conductor cross section | 1.0 to 2.5 mm² / 20 to 14 AWG |
| Conductor stripped length | 5 to 6 mm / 0.20 to 0.24 in |
| Shell material | Plastic |
| Color | Black |
| Environmental | |
| Ambient temperature | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity | 30% to 70% RH |
| Max. altitude | 2000 m / 6562 ft |
| Electrical | |
| Power supply | 120 VAC, 50/60 Hz |
| Power consumption | < 1.4 W |
| Output circuits ratings | |
| Max switching voltage AC | 120 V |
| Max switching voltage DC | N/A |
| Max switching current AC | 8 A (per channel), 16 A (total) |
| Max switching current DC | N/A |
| Sensors, meters | |
| Internal temperature sensor | Yes |
| Voltmeter (AC) | Yes |
| Ammeter (AC) | Yes |
| Radio | |
| RF band | 2400 – 2495 MHz |
| Max RF power | < 20 dBm |
| Wi-Fi protocol | 802.11 b/g/n |
| Wi-Fi range | Up to 30 m / 100 ft indoors, up to 50 m / 160 ft outdoors (Depends on local conditions) |
| Bluetooth protocol | 4.2 |
| Bluetooth range | Up to 10 m / 33 ft indoors, up to 30 m / 100 ft outdoors (Depends on local conditions) |
| MCU | |
| CPU | ESP32-U4WDH |
| Flash | 4 MB |
| Firmware capabilities | |
| Schedules | 20 |
| Webhooks (URL actions) | 20, with up to 5 URLs per hook |
| Scripting | Yes |
| MQTT | Yes |
| CoAP | No |
Basic Wiring Diagrams
Dual-channel switch mode, AC power supply
Cover mode
Legend
| Symbol | Description |
|---|---|
| Terminals | |
| N | Neutral terminal |
| L | Live (120 VAC) terminal |
| O1, O2 | Load circuit output terminals |
| S1, S2 | Switch input terminals |
| Wires | |
| N | Neutral wire |
| L | Live (120 VAC) wire |
Troubleshooting
...
Web Interface Guide
Read the Shelly Plus 2PM, Plus 2PM UL Web Interface Guide
Components and APIs
Printed User Guide
Shelly Plus 2PM UL Bilingual Printed User and Safety Guide.pdf