Device name: Shelly Plus 1PM
Device model: SNSW-001P16EU
Device SSID: ShellyPlus1PM-XXXXXX
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.
MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)
Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
Simplified internal schematics
Device electrical interfaces
1 switch/button input on screw terminal: SW
5 power supply inputs on screw terminals: 2 N (+) and 3 L (Ʇ)
1 relay output with power measurement on screw terminal: O
Shelly proprietary serial interface
⚠CAUTION! High voltage on the add-on interface when the Device is powered!
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)
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.
LED (Red) indication
AP (Access Point) enabled and Wi-Fi disabled:
ON/ 1 second
Wi-Fi enabled, but not connected to a Wi-Fi network:
ON/ 3 seconds
Connected to a Wi-Fi network:
Cloud is enabled, but not connected:
Connected to Shelly Cloud:
OTA (Over the Air Update):
ON/ ½ second
Button pressed and held for 5 seconds:
ON/ ½ second
Button presses and held for 10 seconds:
ON/ ¼ second
The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.
37x42x16 ±0.5 mm / 1.46x1.65x0.63 ±0.02 in
27 g / 0.95 oz
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
-20 °C to 40 °C / -5 °F to 105 °F
30 % to 70 % RH
2000 m / 6562 ft
110 - 240 VAC / 24 - 30 VDC
< 1.2 W
Output circuits ratings
Max switching voltage AC:
Max switching voltage DC:
Max switching current AC:
Max switching current DC:
2400 - 2495 MHz
Max. RF power:
Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
Webhooks (URL actions):
20 with 5 URLs per hook
Basic wiring diagram
Load circuit input terminal
Live (110 - 240 VAC) cable
Load circuit output terminal
24 - 30 VDC positive cable
Switch (controlling O) input terminal
Live (110-240 V) terminal
24 - 30 VDC ground cable
24 - 30 VDC positive terminal
24 - 30 VDC ground terminal
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.