•Operating voltage:DC:9V~35V(orders:DC40~60V) •Standby current:≤80uA •Alarm current: ≤40mA@DC24V; ≤25mA@DC12V •Alarm indication: red LED •Reset: power off or auto reset •Operating temperature: -10℃ +50℃ •Operating humidity: ≤95 RH •Alarm output: Remote led for 2 wires •contact rating N/A for 2 wires; 0.5A •Sensitivity: 0.08-0.16db/m(±0.1db/m) •Standard: EN54-7:2008 •Certificate: CE •Dimension: Ø103 * 53mm