... Button,9V battery operated,85dB/m,sound and flash,Fixed Temperature 135F(57C),alarm,meets EN14604 Test by hand,Dual sensor ... voltage: 9V battery Static current: ≤10uA Alarm current: ≤15mA Fixed Temperature 135F(57C) Alarm indication: red LED flash Sound level: ≥85dB ... /m Operating temperature:-10 to +70 Operating humidity: 5%-95% RH Sensitivity:2 ...