Smart switch Shelly 1 Gen3 — wireless, 240 V AC, plastic housing, 42×16×37 mm, pack of 4

Shelly 1 Gen3 is a compact wireless smart switch designed to control electrical circuits remotely. Intended for 240 V AC installations, the device fits into tight spaces with a plastic housing measuring 42×16×37 mm. This listing is a pack of 4 units, offering multiple points of control for lighting, small appliances and other household circuits. The switch supports low standby consumption and integrates into smart home systems for scheduled operation, remote switching and basic energy-aware usage.

Advantages

The small form factor and plastic housing make the Shelly 1 Gen3 suitable for installation behind switches or inside junction boxes where space is limited. Wireless connectivity allows remote control and automation without extensive rewiring. Low power consumption in standby reduces impact on overall household energy use. Supplied as a pack of 4, it enables multi-point deployment in several rooms or circuits at once.

Suitable for

• Automating domestic lighting circuits
• Remote switching of small household appliances
• Integration into smart home setups for schedules and scenes
• Retrofit installations in existing wiring and switch boxes

Key specifications

• Operating voltage: 240 V AC
• Typical power consumption: approximately 1.2 W (standby)
• Housing material: plastic
• Dimensions: 42 × 16 × 37 mm
• Form factor: compact inline smart relay / switch module
• Packaging: pack of 4 identical units

How to use

Install the Shelly 1 Gen3 in accordance with local electrical codes and safety regulations, placing it inside a junction box or behind an existing wall switch as space allows. Connect the live and neutral conductors to the device terminals and wire the switched output to the load. After powering the unit, follow the manufacturer's instructions to join the device to your wireless network and complete initial configuration using the companion app or supported smart home platform. Configure schedules, scenes or remote control permissions as required for your setup.

Recommendations

Use a qualified electrician for installation if you are not experienced with mains voltage wiring. Ensure the device is mounted in a dry, ventilated location with adequate clearance for heat dissipation and follow local safety standards. For reliable wireless control, verify signal strength at the installation point and consider repositioning the access point or adding a repeater if connectivity is weak.