... Product Description fire alarm, smoke alarm, fire detector, smoke detectorDescription:Widely used for room, hall, kitchen, party, no smoking place, Hotel, Factory..etc.Alarm mode: ... : DC 9V.3.Photoelectric sensor.4.Red LED indicate alarm. Green LED mains indicator light to confirm battery power ... and rated to 24 volts/1 amp resistive. 7.Alarm supplied with connector plug for easy of installation ,built ...