Quick overview from the supplier:
Ajax Button White
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Compatibility: Operates with all Ajax hubs, and range extenders
False alarm prevention: Yes (in the Panic mode)
Number of buttons: 1
Alarm transmission: Not longer than 0,15 sec Active from the first click (no need to wake it up)
Adjustable alarm types: Intrusion; Fire; Medical help; Panic button; Gas leak
Power supply: Battery: CR2032 battery, 3 V
Battery life: Up to 5 years
Operating temperature range: From -10°C to +40°C
Permissible humidity: Up to 75%
Protection class: IP55
