Shelly BLU Wall Switch 4 (White) with No Adapter

The SHELLY-BLU-WALL-SWITCH-4 represents a sophisticated wireless control solution designed for modern smart environments. This compact Bluetooth wall switch enables seamless wireless control of connected devices without requiring complex wiring installations. Engineered for reliability and user convenience, it operates on battery power while maintaining robust communication capabilities across typical residential and commercial spaces.

Simple pairing procedures allow for quick integration with existing Bluetooth ecosystems. A 10-second press and hold initiates pairing mode for connecting to other Bluetooth devices, while a 30-second press and hold performed shortly after battery insertion executes a complete factory reset. The ivory-coloured plastic housing provides an aesthetically pleasing appearance that complements various interior design schemes while ensuring durable performance across diverse environmental conditions.

Technical Specifications

• Physical Dimensions: 46x46x13 mm / 1.81x1.81x0.51 inches
• Weight: 17 g / 0.6 ounces
• Shell Material: Plastic
• Shell Colour: Ivory
• Ambient Working Temperature: -20°C to 40°C / -5°F to 105°F
• Humidity Range: 30% to 70% RH
• Power Supply: 1x 3V CR2032 battery (included)
• Estimated Battery Life: Up to 2 years
• Bluetooth Protocol: 4.2
• RF Band: 2400 - 2483.5 MHz
• Maximum RF Power: < 4 dBm
• Range: Up to 30 metres outdoors, up to 10 metres indoors (depending on local conditions)
• Encryption: AES (CCM mode)

Key Features

• Wireless Operation: Battery-powered design eliminates need for mains wiring
• Extended Range: Provides reliable connectivity up to 30 metres in open spaces
• Long Battery Life: CR2032 battery delivers up to two years of typical operation
• Robust Construction: Durable plastic housing withstands varied environmental conditions
• Secure Communication: Advanced AES encryption ensures data protection
• Simple Configuration: Intuitive pairing and reset procedures for easy setup

Use Cases

This wireless switch finds ideal application in smart home automation systems where traditional wired switches prove impractical. It serves perfectly for controlling lighting systems, motorised window treatments, and other Bluetooth-enabled devices in renovation projects where running new wiring presents challenges. Commercial installations benefit from its flexibility in temporary setups or in historic buildings where preserving original infrastructure is paramount. The device's robust environmental specifications make it suitable for use in garages, conservatories, and other spaces experiencing temperature variations.