Shelly Pro 2

Shelly Pro 2 v.1 is a modification of Shelly Pro 2 (SPSW-002XE16EU)

Shelly Pro 2 v.0 is now obsolete and out of sale.
Download Shelly Pro 2 multi-language printed user manual.

Differences with Shelly Pro 2 v.0 are marked by the ≠ symbol in the text below.

Main changes:

Power supply: no more 12 VDC option.
Relay: no more DC switching
Connectors: 3-terminal connectors are replaced by 2-terminal ones.
PCBs: relay 2-layer PCBs are replaced by 4-layer ones for better thermal performance.
LAN: improved high voltage electrical distances.
Plastics shell: improved dielectric performance.

Device identification (≠)

Device name: Shelly Pro 2 v.1
Device model: SPSW-202XE16EU
Device SSID: ShellyPro2-XXXXXX

Short description

Shelly Pro 2 is a DIN rail mountable 2-channel smart switch with potential-free contacts. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provides professional integrators with many more options for end customer solutions. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services.

Shelly Pro 2 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.

Shelly Pro 2 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
Alexa
Samsung SmartThings

Simplified internal schematics (≠)

Device electrical interfaces

Inputs

2 switch/button inputs on screw terminals: SW1 and SW2
2 power supply inputs on screw terminals: 1 N and 1 L
2 relay inputs: I1 and I2

Outputs

2 relay outputs: O1 and O2

Ethernet port

1 RJ45 connector

⚠CAUTION! Plug in or unplug the LAN cable only when the Device is powered off! The LAN cable connector must not be metallic in the parts touched by the user to plug in or unplug the cable.

Add-on interface

Shelly proprietary serial interface

⚠CAUTION! High voltage on the add-on interface when the Device is powered!

Connectivity

Wi-Fi
Ethernet
Bluetooth

Safety features

Overheating 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 tactile dome button
- Press and hold 5 sec to reboot.
- Press and hold 10 sec to factory reset.

Outputs

LED indication
- Power (red): Red light indicator will be on if power supply is connected.
- Wi-Fi (varies):
  - Blue light indicator will be on if in AP mode.
  - Red light indicator will be on if in STA mode and not connected to a Wi-Fi network.
  - Yellow light indicator will be on if in STA mode and connected to a Wi-Fi network. Not connected to Shelly Cloud or Shelly Cloud disabled.
  - Green light indicator will be on if in STA mode and connected to a Wi-Fi network and to the Shelly Cloud.
  - The light indicator will be flashing Red/Blue if OTA update is in progress.
- LAN (green): Green light indicator will be on if LAN is connected.
- Out 1 (red): Red light indicator will be on if the Output 1 relay is closed.
- Out 2 (red): Red light indicator will be on if the Output 2 relay is closed.

Specifications (≠)

Type	Value
Physical
Size (HxWxD):	94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in
Weight:	76 g / 2.68 oz
Mounting:	DIN rail
Screw terminals max torque:	0.4 Nm / 3.54 lbin
Conductor cross section:	0.5 to 2.5 mm² / 20 to 14 AWG (green connectors) 0.5 to 1.5 mm² / 20 to 16 AWG (blue connectors)
Conductor stripped length:	6 to 7 mm / 0.24 to 0.28 in (green connector) 5 to 6 mm / 0.20 to 0.24 in (blue connectors)
Shell material:	Plastic
Color:	Gray
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 voltage AC:	110 - 240 V
Power supply voltage DC:	N/A
Power consumption:	< 3 W
Neutral not needed:	No
Output circuits ratings
Max switching voltage AC:	240 V
Max switching voltage DC:	N/A
Max switching current AC:	16 A per channel, 25 A total
Max switching current DC:	N/A
Sensors, meters
Temperature sensor:	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-D0WDQ6
Flash:	8 MB
Firmware capabilities
Schedules:	20
Webhooks (URL actions):	20 with 5 URLs per hook
Scripting:	Yes
MQTT:	Yes
CoAP:	No

Basic wiring diagram (≠)

Resistive load

Inductive load and RC snubber

Legend

Terminals		Wires
I1, I2	Load circuit input terminals	L1(A)	Load circuit 1 live (110-240 V) wire
O1, O2	Load circuit output terminals	L2(B)	Load circuit 2 live (110-240 V) wire
SW1, SW2	Switch/button input terminals	L3(C)	Device power supply live (110-240 V) wire
L	Live (110-240 V) terminal	N	Neutral wire
N	Neutral terminal
LAN	Local Area Network RJ 45 connector