Digital Letter Box Lock Feature and Specification:
Key Specifications:
- Working Voltage: DC 2.3 – 3.3V
- Battery Type: CR1220
- Standby Current: ≤2µA
- Max Current: ≤5mA (duration ≤ 35ms)
- Battery Life: 1-2 years (Japan-made battery), supports 30-50 unlocks per day
- Operating Temperature: -5°C to 50°C
- Relative Humidity: 20% to 80%
- Material: Zinc Alloy / ABS
- Mounting Diameter: Suitable for 16mm-20mm diameter holes
- Applicable Plank Thickness:
- Steel: 0.5mm-12mm
- Timber: 0.5mm-22mm
- Certifications: CE, FCC, PSE, ROHS, SGS, SST

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