Uniden SM81 Speaker Microphone [SM81] Brand_Ocean Signal The blocking of the return

The blocking of the return current from the bow thruster battery guarantees that the bow battery remains charged while the current limiting also prevents power dips of the onboard electrical network

Kit Includes

Two holes at the end provide for 180-degree rotation

The orbital ball-bearing arrangement gives the largest possible bearing race diameter

Intercom Capability: No

Uniden SM81 Speaker Microphone [SM81] Brand_Ocean Signal The blocking of the returnSM81 Speaker Microphone Uniden's SM81 Marine VHF Speaker Microphone replaces Uniden's HHSPM. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov. Specifications: Type: Microphones Box Dimensions: 2"H x 4"W x 4"L WT: 0. 32 lbs Quick Guide (pdf)