Shelly Plus 2PM List

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

Google
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 second OFF
- Wi-Fi enabled, but not connected to a Wi-Fi network:
  1 second ON / 3 seconds OFF
- Connected to a Wi-Fi network:
  Constantly ON
- Cloud is enabled, but not connected:
  1 second ON /5 seconds OFF
- Connected to Shelly Cloud:
  Constantly ON
- OTA (Over the Air Update):
  ½ sec ON / ½ second OFF
- Button pressed and held for 5 seconds:
  ½ second ON / ½ second OFF
- Button presses and held for 10 seconds:
  ¼ second ON / ¼ second OFF

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):	37x42x16 ±0.5 mm / 1.46x1.65x0.63 ±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		Wires
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