smoke detector alarm 1.sensor:light labyrinth 2.Sensitivity: adapt to U1217 standed 3.Operating voltage: DC9V/12VDC smoke detector alarmsensor:light labyrinth Operating voltage: DC9V/12VDC Standby current: less than10uAAlarm current: 10-30mASensitivity: adapt to U1217 standed (3.2%...