Specifications Product name: Smart Emergency Button Model: SE30 Size: Φ50x16mm Working voltage: 3V (CR2032 battery) Standby current: ≤5uA Working current: ≤30mA Networking method: Zigbee Communication distance: ≤80 meters (open environment) Working environment: -10 ℃ ~ + 55 ℃ Receiving sensitivity: -96dBm Installation method: direct placement or paste