4 wire smoke detector for charging pile

{"cid":"91221733","title":"Easy Installation 4 Wire Smoke Detector for Industrial Control Equipment and Fire Warning System with High Sensitivity DC12~24V Residential Smoke Detector","imgUrl":"https:\/\/img.chinax.com\/nimg\/35\/70\/6f1e8f0cd22c44feb978fac161b9-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"ANJISI","Model Number":"CA2001L","Minimum Order Quantity":"1PCS","Delivery Time":"3 Working days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T,Western Union","Supply Ability":"10000\/Month","Packaging Details":"72pcs\/carton","Humidity":"\u226495%","Output":"Realy output: 1A DC24V(No\/NC optional) | Customized Request","Sound Pressure Level":"Above 65dB","Specification":"D105mm, H50mm","Product Type":"Smoke Alarm with Relay Output","Appliction":"Security System,Industrial Control Equipment","Application":"Industry, Communication Electronic Products, Special Equipment","Rated Operational Voltage":"DC12~24V"}}