Shelly Pro 2 UL

Device identification

Name: Shelly Pro 2 v.1 ≠

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 Gen2 firmware flexibility and LAN connectivity, it offers professional integrators
broader options for end-customer solutions. It can operate standalone in a local Wi-Fi network
or via cloud automation services.
The device can be accessed, controlled, and monitored remotely wherever Internet is available.
Its embedded Web Interface allows direct monitoring, control, and configuration.

Main features

• DIN rail mountable
• 2-channel switching with potential-free contacts
• Gen2 firmware flexibility
• LAN connectivity
• Embedded Web Interface
• Remote access and monitoring

Use cases

• Residential: Multi-device automation for lighting and appliances
• MDU: Apartments, condominiums, hotels
• Light commercial: Offices, retail, restaurants, gas stations
• Government/municipal: Smart facilities
• University/college: Campus building control

Integrations

Google

Alexa

Samsung SmartThings

Simplified internal schematics

Shelly Pro 2 V1 simplified internal schematics ≠

Device electrical interfaces

Inputs: 2 switch/button inputs on screw terminals (SW1, SW2)

Power supply: 2 screw terminals (1N, 1L)

Relay inputs: I1, I2

Outputs: 2 relay outputs (O1, O2)

Ethernet port: 1 RJ45 connector

Add-on interface: Shelly proprietary serial interface

⚠ CAUTION! Plug/unplug LAN cable only when powered off. LAN connector must not expose metallic parts to touch.

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

Connectivity

Wi-Fi

Ethernet

Bluetooth

Safety function

Overheating protection

Supported load types

• Resistive (incandescent bulbs, heating devices)
• Capacitive (capacitor banks, electronic equipment, motor start capacitors)
• Inductive with RC Snubber (LED drivers, transformers, fans, refrigerators, ACs)

User interface

Inputs: One tactile dome button

• Hold 5s → reboot

• Hold 10s → factory reset

Outputs: LED indication

• Power → Red (on when power supply is connected)

• Wi-Fi → Blue (AP mode)

• Wi-Fi → Red (STA mode, not connected)

• Wi-Fi → Yellow (STA mode, connected; cloud disabled/not connected)

• Wi-Fi → Green (STA mode, connected; cloud enabled)

• Wi-Fi → Flashing Red/Blue (OTA update)

• LAN → Green (LAN connected)

• Out 1 → Red (relay 1 closed)

• Out 2 → Red (relay 2 closed)

Physical

Size (HxWxD): 94×19×69 mm ±0.5 / 3.70×0.75×2.71 in ±0.02

Weight: 76 g / 2.68 oz

Mounting: DIN rail

Screw terminals torque: 0.4 Nm (3.54 lbf·in)

Conductor size: 0.5–2.5 mm² (20–14 AWG, green connectors); 0.5–1.5 mm² (20–16 AWG, blue connectors)

Strip length: 6–7 mm (0.24–0.28 in, green connector); 5–6 mm (0.20–0.24 in, blue connectors)

Shell material: Plastic

Color: Gray

Environmental

Ambient temperature: −20 °C to 40 °C (−5 °F to 105 °F)

Humidity: 30–70% RH

Max altitude: 2000 m (6562 ft)

Electrical

Power supply (AC): 110–240 V~

Power supply (DC): N/A

Power consumption: < 3 W

Neutral required: No

Output 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; 50 m / 160 ft outdoors (depends on conditions)

Bluetooth protocol: 4.2

Bluetooth range: Up to 10 m / 33 ft indoors; 30 m / 100 ft outdoors (depends on conditions)

MCU

CPU: ESP32-D0WDQ6

Flash: 8 MB

Firmware capabilities

Schedules: 20

Webhooks: 20 (up to 5 URLs each)

Scripting: Yes

MQTT: Yes

CoAP: No