A set of two Shelly 1 Gen4 smart relays delivers compact, universal control of lighting and other appliances with support for Wi‑Fi, Bluetooth, Zigbee and Matter. With dry contacts, remote access, schedules, and integration with Google Home, Amazon Alexa and SmartThings, you can easily expand your smart home in an apartment, office, or hotel.
The Shelly 1 Gen4 smart relay enables reliable switching of lights, ventilation, or irrigation with access via local network and the internet. Thanks to multi-connectivity (Wi‑Fi 802.11 b/g/n, Bluetooth 4.2, Zigbee 802.15.4, and Matter), it easily fits into popular ecosystems and platforms. The integrated web interface makes quick setup easy without installing another app.
The model also works as a Zigbee repeater and, if needed, can boost the Wi‑Fi signal for more stable operation. Advanced schedules, webhooks, MQTT, and ShellyScript open the door to sophisticated automation and custom logic. The set includes 2 pieces for quick coverage of multiple circuits.
- Universal integrations: Google Home, Amazon Alexa, SmartThings, KNX net/IP, HTTP API, MQTT(S), Webhooks, UDP.
- Flexible power: 110–240 V AC, 24–48 V DC, 12 V DC; no neutral wire required.
- Compact size: suitable for flush mounting in a wall box.
- Dry contacts: safe switching of various devices and circuits.
- Stable network: Zigbee repeater + option to extend Wi‑Fi range.
Specifications
- Manufacturer
- Shelly
- Model
- 1 Gen4
- Box contents
- 2× Shelly 1 Gen4 controller, user manual
- Dimensions
- 37 × 42 × 16 mm
- Weight
- 26 g
- Maximum terminal tightening torque
- 0.4 Nm
- Conductor cross-section
- 0.2 to 2.5 mm² (solid, stranded, and ferruled conductors)
- Stripped conductor length
- 6 to 7 mm
- Mounting
- Flush/surface mounting (in installation box)
- Enclosure material
- Plastic
- Enclosure color
- Blue
- Terminal color
- Gray
- Operating temperature
- -20 °C to 40 °C
- Operating humidity
- 30% to 70% RH
- Maximum altitude
- 2000 m
- Power supply
- 110–240 V AC; 24–48 V DC; 12 V DC
- Device consumption
- < 1 W
- Neutral required
- No
- External protection
- Circuit breaker per EN60898-1, type B or C, In max. 16 A, Icn min. 6 kA, energy limitation class 3
- Max. switching voltage
- 240 V AC; 30 V DC
- Max. switching current
- 16 A / 240 V AC; 10 A / 30 V DC
- Built-in temperature sensor
- Yes
- Wi‑Fi protocol
- 802.11 b/g/n
- Wi‑Fi band
- 2412–2472 MHz
- Wi‑Fi transmit power
- < 20 dBm
- Wi‑Fi range
- Up to 30 m indoors; up to 50 m outdoors (depending on conditions)
- Bluetooth version
- 4.2
- Bluetooth band
- 2402–2480 MHz
- Bluetooth transmit power
- < 4 dBm
- Bluetooth range
- Up to 10 m indoors; up to 30 m outdoors (depending on conditions)
- Zigbee protocol
- IEEE 802.15.4
- Zigbee repeater
- Yes
- Zigbee band
- 2400–2483.5 MHz
- Zigbee transmit power
- < 20 dBm
- Zigbee range
- Up to 100 m indoors; up to 300 m outdoors (depending on conditions)
- Matter
- Supported
- Processor
- ESP-Shelly-C68F
- Flash memory
- 8 MB
- Number of schedules
- 20
- Webhooks
- 20 (up to 5 URLs per webhook)
- Script support
- Yes (ShellyScript)
- MQTT
- Yes (MQTT/S)
- API and integrations
- HTTP API, Webhooks, UDP, KNX net/IP, Google Home, Amazon Alexa, SmartThings
