Features ultra-low power consumption, stable Bluetooth connectivity, durable battery, and convenient parameter configuration. With the "HolyIOT Beacon" app, users can easily test and adjust advertising parameters to meet varying requirements under different environmental conditions. Product: HOLYIOT-21053 Bluetooth version: BLE 5.0 Chip: nRF52810 Configuration app: HolyIOT Beacon Battery type: Lithium battery Supply voltage: 2.2–3.6 V Transmission distance: 50 m Dimensions: 68 × 25 mm Button: Yes Weight with battery: 48 g Weight without battery: 31 g Installation method: Adhesive Electrical characteristics: Quiescent current: 3 µA Peak current: 8.0 mA Average current: 54 µA (at +4 dB, 500 ms, with all sensors enabled) Battery capacity: 2700 mAh Battery life: Up to 4000 days (at 0 dB, 1 s advertising interval) Operating temperature: –40 °C to +80 °C Color: White Material: Plastic Overall dimensions: Approx. 59 × 41.8 × 15.5 mm Package contents: 1 × nRF52810 Bluetooth beacon Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.