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1 click for SOS emergency help.
| 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) |






