tuya smart life wifi siren alarm sensor, sound & light siren pir infrared sensing machine, wireless alarm for home security, support ale-xa and goog-le home for home, office, store security guard yuoying description:<br/>multiple sound selection<br/>powersupply: miniusb,5v1a<br/>backup powersupply:miniusb,5v1a<br/>sound intensity:100db<br/>detection temperature:-10°c~80°c<br/>detection humidity:0%~100%<br/>wireless type:2.4ghz<br/>protocol:ieee802.11b/g/n<br/>wireless range:45m<br/>operating temperature:0°c~40°c(32f~104°f)<br/>operating humidity:20%~85%<br/>size:68x68x33mm<br/><br/><br/>package included:<br/>1*alarm<br/>1*user manual<br/><br/><br/><br/><br/><br/><br/><br/>