Wifi wireless Smoke detector for control unit

Wifi Smoke Detector , con control unit 433 Mhz  eV1527 ,

Dimensions : 110*110*42mm / 4.3"x4.3"x1.65"

Battery : DC 3V battery (non-replaceable), Battery Life 10 Years

Sound Intensity ＞85dB , Certification TUV & CE approved EN14604 Wireless Parameters 433MHz, eV1527

deliver time 15-20 days