optical attenuator minus 135 db noise

{"cid":"91204674","title":"Continuously Adjustable Optical Attenuator With Large Dynamic Attenuation Range","imgUrl":"https:\/\/img.chinax.com\/nimg\/22\/b0\/d1f74a7c2140674c37888dc9e47e-200x200-1.jpg","attrs":{"Price":"negotiate a price","Brand Name":"YOUCii","Model Number":"U8310A","Minimum Order Quantity":"1pcs","Delivery Time":"20 work days","Place of Origin":"CHINA","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Certification":"CU,IOS","Supply Ability":"20 pcs+per month","Packaging Details":"Carton","Optional Wavelength":"1305\/1308","Output Power":"\u226510.0mW","Bandwidth@3 dB":"\uff1c 0.1 nm","Bandwidth@20 dB":"\uff1c 0.5 nm","Operation Temperature":"0\uff5e +40 \u2103","SMSR":"\uff1e 45 dB\uff081270nm etc.\uff09"}}

{"cid":"91202130","title":"RF Shielded Window with Black Painting Mesh Treatment and 60dB Noise Shielding in Fixed Style for Industrial Settings","imgUrl":"https:\/\/img.chinax.com\/nimg\/88\/78\/5012d6759b93f6c2f57a5aabfcf2-200x200-1.jpg","attrs":{"Price":"$1580~$4120\/set","Brand Name":"Jovi","Model Number":"1-cf-7","Minimum Order Quantity":"1set","Delivery Time":"7-14days","Packaging Details":"Wooden Packing Or Customized","RF Attenuation":"100-110 dB","Glass Thickness":"5mm tempered glass","Insulating Glass":"8mm hollow glass","Frequency Range":"10 MHz to 130 MHz","Payment Terms":"T\/T","Transparency":"98.5%","Supply Ability":"300 Set \/ Month","Place Of Origin":"China","Noise Shielding":"60dB"}}