Package Includes :<br /><br />1 x Wireless Siren Alarm<br />1 x Instruction manual<br /><br />Features :<br /><br />Make sound and alarm when alarm triggered <br /><br />Compatible with 300 series and 500 series <br /> <br />Specification :<br /><br />Range: up to 50m outdoor， up to 30m indoor <br />Standby current: 87uA <br />Battery: CR123A*2<br />Battery life: 1 year<br />Continuous work: 1400 times<br />Operation temperature: 0-40<br />Size (D x W x H): 70*68*31mm