Shelly Plus 1PM

Device identification

Device name: Shelly Plus 1PM
Device model: SNSW-001P16EU
Device SSID: ShellyPlus1PM-XXXXXX

Short description

Shelly Plus 1PM is a small form factor smart switch with power measurement, 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 1PM 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 1PM has 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

1 switch/button input on screw terminal: SW
5 power supply inputs on screw terminals: 2 N (+) and 3 L (?)

Outputs

1 relay output with power measurement on screw terminal: O

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

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):
  ? sec ON / ? second OFF
- Button pressed and held for 5 seconds:
  ? second ON / ? second OFF
- Button presses and held for 10 seconds:
  ? second ON / ? 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:	27 g / 0.95 oz
Mounting:	Wall console
Screw terminals max torque:	0.4 Nm / 3.5 lbin
Conductor cross section:	0.5 to 1.5 mm? / 20 to 16 AWG
Conductor stripped length:	5 to 6 mm / 0.20 to 0.24 in
Shell material:	Plastic
Color:	Red
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 - 30 VDC
Power consumption:	< 1.2 W
Output circuits ratings
Max switching voltage AC:	240 V
Max switching voltage DC:	30 V
Max switching current AC:	16 A
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

Plus 1PM AC wiring diagram-20240528-134438.png

110-240 VAC power supply Resistive load

Plus 1PM AC RC snubber-wiring-20240528-131329.png

110-240 VAC power supply
Inductive load and RC snubber

24-30 VDC power supply

Resistive load

Plus 1PM DC RC snubber-wiring-20240528-131529.png

24-30 VDC power supply

Inductive load and RC snubber

Legend

Terminals		Wires
O	Load circuit output terminal	+	24 - 30 VDC positive wire
SW	Switch (controlling O) input terminal	N	Neutral wire
L	Live (110-240 V) terminal	GND	24 - 30 VDC ground wire
N	Neutral terminal
+	24 - 30 VDC positive terminal
?	24 - 30 VDC ground terminal

Troubleshooting

Your device is overheating.

Make sure you are not using the L and N device terminals as bridges. Using them as bridges doubles the current through them which leads to overheating. Using the terminals as bridges in only available with low currents, so that the total current does not exceed 16 A.

Make sure the ambient temperature does not exceed 40 °C / 105 °F. If placed in confined space Shelly Plus 1PM may increase the ambient temperature above the allowed limits. Ensure ventilation of the Device.