Contact closure alarm optical fiber converter

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{"cid":"315831","pid":"40518693","pimg_url":"\/\/img1.b2bforus.com\/20\/cc\/937dfa243c6c\/product\/157831302_s-w400xh400.jpg","name":"Dry Intruder Alarm System 8 Ports Contact Closure To Fiber Optic TTL Fiber Optic Media Converter For Infrared Beam Detector Intruder Alarm System","attrs":{"Price":"Negotiable","MOQ":"1 set","Delivery Time":"Negotiable","Brand":"Sthanco or OEM"}}

{"cid":"315831","pid":"40518684","pimg_url":"\/\/img1.b2bforus.com\/20\/cc\/937dfa243c6c\/product\/157831260_s-w400xh400.jpg","name":"Intruder Alarm System 2 CH Switch Fiber Optic Converter Infrared Alarm to Fiber Changer Signal FC Port Fiber Transceiver Relay Closure Dry Contacts","attrs":{"Price":"Negotiable","MOQ":"1 set","Delivery Time":"Negotiable","Brand":"Sthanco or OEM"}}