Shelly 1 Gen3 – universal Wi-Fi relay with dry contact (16 A)
Art. no: Shelly_1_Gen3
Shelly 1 Gen3 is a compact, standalone smart relay with potential-free (dry) contacts. It is flexible with 110–240 V AC, 24–48 V DC or 12 V DC and can handle up to 16 A at 240 V AC (10 A at 30 V DC). Built-in Wi-Fi 2.4 GHz and Bluetooth, BLE gateway & Wi-Fi range extender provide easy installation and stable range - without a hub. Perfect for controlling lighting, gates, doorbells, content sealing or other devices requiring dry contact.
Key Features
Potential-free relay output – ideal for contactors, garage doors, doorbells, etc.
Received supply voltage: 110–240V AC / 24–48V DC / 12V DC.
High load capacity: up to 16A (AC) – 1-channel control.
Wi-Fi + Bluetooth with BLE gateway & built-in Wi-Fi range extender for IoT devices.
Overheat protection for safer operation.
Local or via cloud – support for MQTT(s), webhooks, HTTPS/TLS, WebSocket.
Widely integrated: Google/Alexa/SmartThings, KNXnet/IP and Matter support from firmware 1.6.0+.
No hub required – control via the Shelly Smart Control app or local web interface.
Suitable for
Automated lighting (time control, sunrise/sunset)
Garage door & gate control (dry contact)
Irrigation & valve control
Doorbells and low voltage control
Heating/cooling – control valves and manifolds
Technically in brevity
Model: S3SW-001X16EU
Radio: Wi-Fi 802.11 b/g/n (2.4 GHz), Bluetooth 4.2
Max last: 16 A/240 V AC, 10 A/30 V DC
Dimensions: 37 × 42 × 16 mm • Weight: 26 g
MCU: ESP-Shelly-C38F with 8 MB flash
Environment: -20 °C to +40°C