The Apollo Deep Isolating Base 45681-518 APO Red Flash Sounder is a high-quality, compact unit designed for use in a variety of deep water applications. With a focus on isolation and sound transmission, this product is perfect for underwater monitoring and detection tasks. The red flash feature enhances visibility in challenging environments, ensuring accurate results every time. Built by the trusted brand Apollo, this unit guarantees top-notch performance and reliability for all your underwater needs. These sounders were installed but not powered up due to them being the wrong model and not compatible with the existing fire alarm Used in very good condition No box’s Dispatched 2nd class Royal Mail
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