{"product_id":"opus-op-fsm-02-hearing-loop-receiver-and-measurer-kit","title":"Opus OP-FSM-02 Hearing Loop Receiver and Measurer Kit","description":"\u003ch2\u003eOpus OP-FSM-02 Hearing Loop Receiver and Measurer Kit\u003c\/h2\u003e \u003cp\u003eThe Opus OP-FSM-02 is a practical hearing loop receiver and measurer kit designed for checking loop performance and monitoring audio through headphones. Supplied as a complete kit with the OP-FSM receiver\/measurer and OP-778 headphones, it provides a compact solution for assisted listening evaluation and everyday field use.\u003c\/p\u003e  \u003cp\u003eWith true RMS measurement, color-coded LED indication, and a headphone output for direct listening, the OP-FSM-02 is built to support clear, reliable loop testing in professional and accessibility-focused environments. Its portable battery-powered design and long operating time make it a convenient choice for technicians, installers, and service teams working with hearing loop systems.\u003c\/p\u003e  \u003ch3\u003eKey Features of the Opus OP-FSM-02\u003c\/h3\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eComplete Measurement Kit:\u003c\/strong\u003e Includes the OP-FSM receiver\/measurer and OP-778 headphones for a ready-to-use hearing loop testing solution.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHearing Loop Monitoring:\u003c\/strong\u003e Designed for receiving and measuring loop system performance in assisted listening environments.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eTrue RMS Measurement:\u003c\/strong\u003e Uses true RMS measurement with a 125 ms response for dependable monitoring.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eColor-Coded LED Display:\u003c\/strong\u003e Features an LED dot display for fast visual indication during use.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Listening Output:\u003c\/strong\u003e Includes a 3.5 mm headphone connection for direct audio monitoring.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBattery-Powered Operation:\u003c\/strong\u003e Runs on two AA batteries for portable field use.\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eExtended Operating Time:\u003c\/strong\u003e Delivers up to 100 hours of operation for convenient long-term use.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e   \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Opus\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e OP-FSM-02\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Hearing loop receiver and measurer kit\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eKit Components:\u003c\/strong\u003e OP-FSM receiver\/measurer, OP-778 headphones\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOperating Mode -20 dB Calibration:\u003c\/strong\u003e 0.043 A\/m\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOperating Mode 0 dB Calibration:\u003c\/strong\u003e 0.400 A\/m\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eMeasurement Type:\u003c\/strong\u003e True RMS 125 ms\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFrequency Response Filter:\u003c\/strong\u003e A\/Flat\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFrequency Response 30 Hz to 500 Hz:\u003c\/strong\u003e -3 dB to -4 dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFrequency Response 500 Hz to 2.5 kHz:\u003c\/strong\u003e ± 0.25 dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eFrequency Response 2.5 kHz to 10 kHz:\u003c\/strong\u003e ± 3 dB\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Color-coded LED dot display\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eHeadphone Connection:\u003c\/strong\u003e 3.5 mm cinch\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 2 x AA\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eIndicator Lights:\u003c\/strong\u003e LED\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eOperating Time:\u003c\/strong\u003e 100 hours\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3.27 x 4.96 x 1.38 inches\u003c\/li\u003e   \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 300 g\u003c\/li\u003e \u003c\/ul\u003e  \u003ch3\u003eWhat's Included\u003c\/h3\u003e \u003cul\u003e   \u003cli\u003eOP-FSM receiver\/measurer\u003c\/li\u003e   \u003cli\u003eOP-778 headphones\u003c\/li\u003e \u003c\/ul\u003e","brand":"Opus","offers":[{"title":"Default Title","offer_id":45922415673541,"sku":"OPUS-OPFSM02","price":361.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3085\/3829\/files\/92e69585492400234ebcec3aabd46ea3.jpg?v=1772488610","url":"https:\/\/avlgear.com\/products\/opus-op-fsm-02-hearing-loop-receiver-and-measurer-kit","provider":"AVLGEAR","version":"1.0","type":"link"}