16 4ft detect distance wifi hidden camera smoke detector

{"cid":"91224561","title":"Wireless GSM RF Mobile Phone GPS Magnet Signal Detector for Portable Hero 009 195g","imgUrl":"https:\/\/img.chinax.com\/nimg\/6c\/7c\/1aa57d19f886a531a2c2e6b6dc9c-200x200-1.jpg","attrs":{"Price":"$68.00\/pieces >=2 pieces","Brand Name":"SW","Model Number":"009","Minimum Order Quantity":"2 pieces","Place of Origin":"Guangdong, China","Network":"GSM","Battery":"Built-in 1500mAh rechargeable lithium battery","Working current":"25-35mA","Working time":"20-45 hours","Material":"Aluminum alloy","Detection sensitivity":"\u22640.03mw (Main Frequency)","Indication":"20 Level LED Luminous indicator \/Variation","Weight":"195g"}}