Shelly Plus 2PM - smart two-channel switch power consumption with measurement

Shelly Plus 2PM - Smart 2-Channel Switch with Power Metering

Device identification

• Device name: Shelly Plus 2PM

• Device model: SNSW-002P16EU

• Device SSID: ShellyPlus2PM-XXXXXX

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Short description

Shelly Plus 2PM is a compact 2-channel smart switch with power metering and cover control. It lets you control electrical appliances remotely from a mobile phone, tablet, PC or home automation system.

The device can work standalone on a local Wi-Fi network or with cloud-based home automation services. It can be monitored, controlled and configured through its web interface, and it fits into standard wall boxes, behind sockets or switches, or in other places with limited space.

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Main applications

• Residential

• Multi-unit buildings (apartment buildings, hotels)

• Small commercial (offices, shops, restaurants, petrol stations)

• Government and municipal buildings

• Universities and colleges

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Integrations

• Google

• Samsung SmartThings

• Amazon Alexa

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Electrical interfaces

Inputs:

• 2 switch/button inputs (S1 and S2) on screw terminals

• 3 power inputs on screw terminals: 1 N (+) and 2 L (Ʇ)

Outputs:

• 2 relay outputs with power metering

Add-on interface:

• Shelly proprietary serial interface
  ⚠ Note: the add-on interface carries high voltage when the device is powered!

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Connectivity

• Wi-Fi

• Bluetooth

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Safety features

• Overheating protection

• Overvoltage protection

• Overcurrent protection

• Overpower protection

• Obstruction detection (cover mode)

• Safety switch (cover mode)

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Supported load types

• Resistive (incandescent bulbs, heaters)

• Capacitive (capacitors, electronics, motor start capacitors)

• Inductive with RC snubber (LED drivers, transformers, fans, fridges, air conditioners)

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User interface

Input:

• Single button press

• Hold for 5 s: AP and Bluetooth connection

• Hold for 10 s: factory reset

Output:

• LED (single-colour) indicator

• Blink patterns depending on AP, Wi-Fi and cloud connection status and OTA updates

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Physical specifications

• Size: 37x42x16 ±0.5 mm

• Mounting: wall box

• Max screw terminal torque: 0.4 Nm

• Wire cross-section: 0.5–1.5 mm²

• Wire stripping length: 5–6 mm

• Housing: plastic, black

Environment:

• Operating temperature: -20…40 °C

• Humidity: 30–70% RH

• Max altitude: 2000 m

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Electrical specifications

• Supply voltage: 110–240 VAC / 24 VDC ±10%

• Power consumption: <1.4 W

• Max AC voltage: 240 V

• Max DC voltage: 30 V

• Max AC current: 10 A per channel, 16 A total, 18 A max short-term

• Max DC current: 10 A

• Built-in temperature sensor: Yes

• AC voltmeter: Yes

• AC ammeter: Yes

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Wireless connectivity

• Wi-Fi: 802.11 b/g/n, 2400–2495 MHz, <20 dBm, range 30 m indoors / 50 m outdoors

• Bluetooth: 4.2, range 10 m indoors / 30 m outdoors

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Microcontroller

• CPU: ESP32-U4WDH

• Flash: 4 MB

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Firmware capabilities

• Schedules: 20

• Webhooks: 20, 5 URLs per hook

• Scripting: Yes

• MQTT: Yes

• CoAP: No

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Wiring terminals (legend)

Terminal	Description
N	Neutral
L	Live (110–240 V)
O1, O2	Load outputs
S1, S2	Switch inputs
+	24 VDC positive
-	24 VDC negative
Ʇ	24 VDC negative terminal

User manual: Shelly Plus 2PM multilingual printed user and safety guide.pdf Manufacturer's website: Shelly Plus 2PM