Fiber optic network equipment accessory — replacement electrode pair (model ZS-700E), specifically designed for Signal Fire optical fiber fusion splicers, including the AI-9 model. The electrodes generate a stable electric arc necessary for the perfect, low-loss fusion splicing of optical fibers. Made from high-quality tungsten alloy, they offer a long service life (averaging up to 3000 splicing cycles). Timely replacement of electrodes is crucial for maintaining the device's optimal performance and high splicing quality.