A compact Bluetooth-enabled clock and sensor that displays the current time, temperature, and humidity on a crisp e-ink screen. At just 110 × 55 mm with a minimal ABS enclosure, it fits neatly on a desk, shelf, or wall.

The sensor broadcasts temperature and humidity data over Bluetooth Low Energy (BLE) with a range of approximately 10 metres, making it a great addition to home automation setups. It works with ESPHome and Home Assistant as a remote sensor node, or simply as a standalone e-ink clock.

Key Features

• E-Ink Display – 87 × 32 mm (3.5 × 1.25″) screen with clear, always-on readout
• Temperature and Humidity Sensor – Live readings displayed on screen and broadcast via BLE
• Bluetooth Low Energy – Approximately 10 m range for wireless sensor data
• Home Automation Compatible – Works with ESPHome and Home Assistant as a remote sensor node
• Compact and Mountable – 110 × 55 mm ABS enclosure with included magnet and adhesive stickers
• Battery Powered – Runs on 2× CR2032 coin cells (pre-installed)

Ideal For

• Home automation and environmental monitoring
• ESPHome and Home Assistant sensor networks
• Desk or wall-mounted clock with temperature display
• IoT and BLE experimentation

Package Contents

• 1× Bluetooth eInk Display Clock with Temperature and Humidity Sensor
• 2× CR2032 coin cell batteries (pre-installed)
• 1× Magnet
• Adhesive mounting stickers

Resources

• ESPHome – LYWSD02 Sensor Integration
• LYWSD02 Clock Sync Tool (Web Bluetooth)