Shelly Plus 1PM

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.

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)

Simplified internal schematics

Shelly 1PM Plus - Simplified internal schematics

Wiring legend

Terminals Description
I Load circuit input terminal
0 Load circuit output terminal
SW Switch (controlling O) input terminal
L Live (110-240 V) terminal
N Neutral terminal
+ 24 - 30 VDC positive terminal
24 - 30 VDC ground terminal

Basic wiring diagrams

IMPORTANT – All 240V electrical work and installations in Australia must be performed by a licensed electrician. The wiring diagrams below are for informational purposes only.

AC power supply
DC power supply

Advanced wiring diagrams

IMPORTANT – All 240V electrical work and installations in Australia must be performed by a licensed electrician. The wiring diagrams below are for informational purposes only.

Shelly 1PM Plus Wiring
Shelly 1PM Plus - Standard Switching Wiring Australia
Shelly 1PM Plus - 2-Way Switching Wiring Australia


Press and hold the button on the back of the Shelly 1PM Plus for 10 seconds to factory reset the device.

Please make sure that you are running the latest firmware and try turning on the Shelly Cloud connection through the web interface.

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 16A.


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.



Power supply AC: 110-230V ±10%, 50/60Hz
Power supply DC: 24 – 30V
Maximum load: 16A
Device power consumption: < 1 W

Special functions

Dry contacts: No
Roller shutter mode: No
Device temperature protection: Yes
Overload protection: Yes
Power measurement: Yes
Working without a neutral wire: No


Control channels: 1 On/Off Relay Channel
Operational temperature: 0°C to + 40°C
Intelligent On/Off: Yes
Local and smart control: Yes
Sunrise/Sunset timer: Yes
Built-in weekly scheduler: Yes


Wi-Fi protocol: 802.11 b/g/n
Radio frequency: 2400 – 2500 MHz
Radio signal power: 1mW
Wireless range: up to 50 m outdoors and up to 30 m indoors (depending on the building materials)
Bluetooth: Yes


Size: 41mm x 36mm x 16mm
Updated on September 6, 2023

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