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Function description
| Communication protocol | Zigbee | 
| Transmission Frequency | 2.4GHz | 
| Transmission Power | ≤15dBm | 
| Communication Distance | 100m (open air) | 
| Working Voltage | DC 3V ( CR2032) | 
| Low battery indication | 2.6V±0.2V | 
| Standby current | ≤5uA | 
| Working current | ≤30mA | 
| Working temperature | -10℃~+55℃ | 
| Battery life | more than a year(20 times a day) | 






