24 channel seismograph for underground engineering

{"cid":"91217338","title":"Multiwave Seismic Instruments High Density 24 Channels Seismograph","imgUrl":"https:\/\/img.chinax.com\/nimg\/e3\/a0\/32b461980196ebde98b92ea6d90a-200x200-1.jpg","attrs":{"Price":"Ngotiated","Brand Name":"Gold","Model Number":"WZG-24C","Minimum Order Quantity":"1 set","Delivery Time":"5-8 working days","Place of Origin":"Chongqing, China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"1 set per 5 days","Packaging Details":"Carton","Product Name":"Engineering Seismograph","Application":"borehole seismic receiver","Channels":"24","OEM\/ODM":"Acceptable","Depth":"50m to 100m","Frequency":"38hz","Diameter":"50\/40mm","Arm":"Arm open geophone","Material":"Steel"}}

{"cid":"91190354","title":"NK27 Male Seismic Cable Connector Used For 12 Channels Seismograph Recording","imgUrl":"https:\/\/img.chinax.com\/nimg\/5c\/03\/d5bd60e68a9ebc0db89a40aa9c03-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"EGL","Model Number":"NK27 Male Connector","Minimum Order Quantity":"1 pcs","Delivery Time":"10 work days","Certification":"ISO9001","Place of Origin":"China","Payment Terms":"T\/T, PayPal\uff0cCredit card, Western Union","Supply Ability":"5000 pcs\/month","Packaging Details":"Carton","Name":"NK27 Male Connector","Used":"12 Channels Seismic Cable connector","Color":"Black","Pins":"27","Operating Temperature":"-40\u00baC to +70\u00baC","HS CODE":"9015900090"}}