Power 9V DC, Static current <20A Alarm current <25mA Alarm output NC, NO, level, flashing alarm Power: 9V DC, Static current: <20¦ÌA Alarm current: <25mA Alarm output: NC, NO, level, flashing alarm Alarm volume: > 95dB Monitoring area: 20sqm Self-detecting LED: 1.67s Working temperature: -10 ~ 45oC Relative humidity: < 95% Material: ABS Frequence:315MHZ/433MHZDistance:100M