Alarm Wireless Smoke Detector with 9V Battery Bac

FeatureFeatures: * Power supply: 9V DC battery * "Battery missing" lockout * Low battery alarm * High sensitivity * Humidity range: 15% to 95% RH * Operating temperature: -10ºC to +50ºC * Built-in sounder to give a minimum sound output of 85dB at 3m * Senses smoke using the light scatter principle * Quick response to visible smoldering smoke * Test button simulates smoke – use to check performance Diagrammatic SpecificationSpecification: * Photoelectric sensor * Radio frequency: 433.92 MHz * Range: 50 meters (min) in free space * Maximum link number: 20 * Two-tone LED: • Red LED indicates alarm • Green LED indicates radio signal is received * Standby current: <40uA * Alarm current: <30mA Package Information Color Box Size: 220X115X42mm Carton Size: 465x240x365mm Qty/CTN: 30 sets / 60PCS G.W: 12Kg * Radio frequency: 433.92 MHz,with Sending and Receiving module