Device identification
- Device name: Shelly Plus 2PM
- Device model: SNSW-002P16EU
- Device SSID: ShellyPlus2PM-XXXXXX
Short description
Shelly Plus 2PM is a small form factor 2-channel smart switch with power measurement and cover control, which allows remote control of electric appliances through a mobile phone, tablet, PC, or home automation system. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services.
Shelly Plus 2PM can be accessed, controlled and monitored remotely from any place where the user has internet connectivity, as long as the device is connected to a Wi-Fi router and the Internet.
It can be retrofitted into standard electrical wall boxes, behind power sockets and light switches or other places with limited space.
Shelly Plus 2PM has an embedded Web Interface which can be used to monitor and control the device, as well as adjust its settings.
Main applications
- Residential
- MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)
- Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
- Government/municipal
- University/college
Integrations
- Samsung SmartThings
- Alexa
Simplified internal schematics
Device electrical interfaces
Inputs
- 2 switch/button inputs on screw terminal: S1 and S2
- 3 power supply inputs on screw terminals: 1 N (+) and 2 L (Ʇ)
Outputs
- 2 relay outputs with power measurement on screw terminal
Add-on interface
- Shelly proprietary serial interface
⚠ CAUTION! High voltage on the add-on interface when the device is powered!
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 light drivers, transformers, fans, refrigerators, air-conditioners)
User interface
Inputs
- One (Reset) button
- Press and hold for 5 seconds to enable device access point and Bluetooth connection.
- Press and hold for 10 seconds to factory reset the device.
Outputs
- LED (monocolor) indication
- AP (Access Point) enabled and Wi-Fi disabled: 1 second
ON/ 1 secondOFF - Wi-Fi enabled, but not connected to a Wi-Fi network: 1 second
ON/ 3 secondsOFF - Connected to a Wi-Fi network: Constantly
ON - Cloud is enabled, but not connected: 1 second
ON/ 5 secondsOFF - Connected to Shelly Cloud: Constantly
ON - OTA (Over the Air Update): ½ sec
ON/ ½ secondOFF - Button pressed and held for 5 seconds: ½ second
ON/ ½ secondOFF - Button pressed and held for 10 seconds: ¼ second
ON/ ¼ secondOFF
- AP (Access Point) enabled and Wi-Fi disabled: 1 second
The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.
Specifications
| Type | Value |
|---|---|
| Physical | |
| Size (HxWxD) | 37×42×16 ±0.5 mm / 1.46×1.65×0.63 ±0.02 in |
| Weight | |
| Mounting | Wall console |
| Screw terminals max torque | 0.4 Nm / 3.5 lbin |
| Conductor cross section | 0.5 to 1.5 mm² / 20 to 16 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 | 110 - 240 VAC / 24 VDC ±10% |
| Power consumption | < 1.4 W |
| Output circuits ratings | |
| Max switching voltage AC | 240 V |
| Max switching voltage DC | 30 V |
| Max switching current AC | 10 A (per channel), 16 A (total), 18 A (total peak) |
| Max switching current DC | 10 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 and 50 m / 160 ft outdoors (Depends on local conditions) |
| Bluetooth Protocol | 4.2 |
| Bluetooth Range | Up to 10 m / 33 ft indoors and 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 5 URLs per hook |
| Scripting | Yes |
| MQTT | Yes |
| CoAP | No |
Basic wiring diagram
| Dual-channel switch mode, AC power supply | Dual-channel switch mode, DC power supply |
|---|---|
 |  |
| Cover mode |
|---|
 |
Legend
| Terminals | Description | Wires | Description |
|---|---|---|---|
| N | Neutral terminal | N | Neutral wire |
| L | Live (110–240 V) terminal | L | Live (110 – 240 VAC) wire |
| O1, O2 | Load circuit output terminals | + | 24 VDC positive wire |
| S1, S2 | Switch input terminals | - | 24 VDC negative wire |
| + | 24 VDC positive terminal | ||
| Ʇ | 24 VDC negative terminal |
Troubleshooting
...
Web Interface guide
Read the Shelly Plus 2PM web interface guide:
Printed user guide
Shelly Plus 2PM multilingual printed user and safety guide
Compliance
- Shelly Plus 2PM multilingual EU declaration of conformity
- Shelly Plus 2PM UK PSTI ACT Statement of compliance
- Shelly Plus 2PM x2 UK PSTI ACT Statement of compliance
- Shelly Plus 2PM AU NZ Certificate for Suitability