Specifications

2.11.4 HM-1SW (910281-000): The HM-1SW consists of an HM-1 mouth mask, a head
strap, a ceramic earphone, an ME-500 dynamic microphone, a Hi-Use
®
connector, and a
chest-mount PTT button.
2.11.5 HM-1SW-SM (910281-001): The HM-1SW-SM consists of an HM-1 mouth
mask, a head strap, a ceramic earphone, an all-depth Super Mic
®
, a Hi-Use
®
connector, and
a chest-mount PTT button.
2.11.6 LAR5-SW ADAPTER (900282-006): The LAR5-SW adapter is placed between
the inhalation hose and LAR V bite-mouth DSV assembly. It is designed to allow basic
words to be transmitted without the need for a full-face or mouth mask. The assembly also
is tted with a high-quality ceramic earphone.
2.11.7 EM-OTS-2 (910369-000): The EM-OTS-2 EM assembly is designed for all
Guardian (GFFM) FFMs. It has dual ceramic earphones w/ earphone holders, an ME-16
Hot-Mic, a Hi-Use
®
connector, and a PTT button. The assembly is installed into the Guardian
FFM communications port.
2.11.8 EM-OTS-2SM (910379-000): The EM-OTS-2SM EM assembly is designed for
all Guardian (GFFM) FFMs. It has dual ceramic earphones w/ earphone holders, the Super-
Mic (all depth, oodable, noise-cancelling microphone), a Hi-Use
®
connector, and a PTT
button. The assembly is installed into the Guardian FFM communications port.
2.12 MICROPHONES
2.12.1 ME-16R HOT-MIC
®
(912086-000): The ME-16R Hot-Mic
®
has a state-of-
the-art 150-ohm, water-resistant, noise-cancelling microphone element designed to give
you long, trouble-free use and the highest intelligibility possible. Although the Hot-Mic
is trouble free, it should be maintained. Rinse it with freshwater after each use to get all
dirt, debris, and salt water from the grill. Dry it with a clean, soft towel. If the element
ever needs to be replaced, it is easily removed by unscrewing the two small Phillips-head
screws located on its base.
Wetting the microphone does not harm it. However, the microphone element can only
withstand an 8- to 10-foot depth/pressure differential. Removing your diving FFM at the
back of the boat and wetting the microphone would cause no problem; but if the FFM with
element dropped more than 8 to 10 feet into the water, the pressure change probably would
damage the element. In tests we have taken off and replaced the FFM at 30 feet without any
problem; but the pressure difference from dofng the FFM at 30 feet and descending to 40
feet may damage the microphone.
Do not allow the microphone to be submerged for more than ve minutes. The hydrophobic
membrane may saturate and be squeezed on the next dive, causing damage to the element.
If a more robust microphone is necessary, we have other, all-depth, oodable microphone
elements. However, they are not noise canceling, and their intelligibility is about 20% lower.
The ME-16R Hot-Mic should be replaced yearly or sooner if it becomes damaged.
2.12.2 SUPER MIC
®
DEPTH MASTER: The Super Mic
®
offers patented
technology* that overcomes a limitation of other microphones. It can be used at any
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