Product Name: Smoke and Fire DetectorModel Number: SA-YG-010Place of Origin: ChinaFeatures: 1) Special SCM intelligent controls, self-detecting, strong reliability, and easy installation 2) Relay normally opened/closed signal output and resumes automatically 3) Can be linked to home security system 4) Power: 9~15V DC, 24V optional 5) Static current: 6) Alarm current: 7) Alarm output: NC, NO, level, flashing alarm 8) Alarm volume: >95dB 9) Monitoring area: 20sqm 10) Self-detecting LED: 1.67s 11) Working temperature: -10 ~ 45oC 12) Relative humidity: 13) Material: ABS 14) It can alarm independently 15) It also can match with security main panel as a detector to alarm with low power indicated and test button Inner packing: Box dimensions (L x W x H): 10.5 x 4.5 x 15cm N.W.: 275.8g