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    • Red waterproof cap with black rubber seals stacked for XP DEUS II metal detector remote control
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    XP DEUS II Remote Control 20 Meter Waterproof Cap - Red

    SKU: D2-RC1-RED20M
    Sale Price $3.90 Regular Price $4.59
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    The XP DEUS II Remote Control 20 Meter Waterproof Cap in red is a pressure-balancing component designed exclusively for underwater detecting with the DEUS II remote control. This cap maintains internal pressure equilibrium when the remote is submerged, preventing keypad swelling and speaker membrane adhesion that occur when atmospheric pressure differentials build up during deep dives. DEUS II owners who hunt rivers, lakes, or saltwater beaches below the surface need this red cap installed on the remote before entering the water, and the cap must be removed immediately upon returning to land because the pressure-balancing mechanism that protects the remote underwater will cause component malfunction in surface air as temperature and barometric pressure shift throughout the day.

    What's Included with the XP DEUS II Remote Control 20 Meter Waterproof Cap

    • XP DEUS II Remote Control 20 Meter Waterproof Cap in red

    Why DEUS II Divers Reach for the Red 20 Meter Cap

    • Pressure balancing prevents keypad swelling during deep underwater hunts: the red cap equalizes internal and external pressure at depths up to 20 meters, eliminating the membrane distortion that makes buttons unresponsive or stuck.
    • Speaker protection in submerged environments: the pressure-balancing design stops the loudspeaker membrane from adhering to its housing when external water pressure exceeds internal air pressure during descent.
    • Mandatory cap-swap discipline for land detecting: removing the red cap before surface hunts prevents the flexible keypad from swelling or the speaker from sticking as ambient temperature and barometric pressure vary, a maintenance habit that extends remote lifespan.
    • Genuine XP engineering for the DEUS II remote control: this cap is the factory-specified component for underwater pressure management, not an aftermarket workaround, ensuring the remote's waterproof integrity remains intact through repeated dive cycles.
    • For detectorists running multiple XP metal detectors - authorized US dealer configurations, the red cap is the required accessory when transitioning the DEUS II remote from park hunts to river or ocean detecting.

    Pressure Management in Underwater DEUS II Remote Operation

    River and Lake Detecting at Depth

    When a DEUS II remote descends below the surface without the red 20-meter cap installed, external water pressure rises faster than the sealed internal air pressure can equalize, compressing the flexible keypad membrane inward and pressing the loudspeaker diaphragm against its housing. The red cap incorporates a pressure-balancing mechanism that prevents this compression. The cap remains effective to 20 meters, equivalent to 65 feet, covering the depth range of most recreational underwater detecting. Once the hunt concludes and the remote returns to the surface, the cap must be removed immediately because the balancing mechanism that protects components underwater will cause the keypad to swell and the speaker to malfunction when exposed to surface air temperature swings and barometric pressure changes over the following hours.

    Saltwater Beach Surf and Shallow Water Hunts

    Saltwater detectorists working the surf zone or wading in tidal flats face pressure challenges during underwater detecting. Wave action and repeated submersion cycles create transient pressure spikes that can distort the keypad, and the red cap eliminates this risk entirely. For extended surf hunts or any session where the remote will be submerged repeatedly, installing the red cap is the safer protocol. The cap's pressure-balancing mechanism handles the rapid depth changes that occur when a wave breaks over the remote or the detectorist dives to retrieve a target from a trough. Understanding the technologies behind modern detectors helps clarify why the DEUS II remote requires pressure management for underwater use.

    Red waterproof cap with black rubber seals stacked for XP DEUS II metal detector remote control

    Specifications

    • Compatibility: XP DEUS II Remote Control
    • Maximum Depth: 20 meters (65 feet)
    • Color: Red
    • Function: Pressure balancing for underwater use only
    • Land Use: Forbidden (remove cap before surface detecting)
    • Warranty: Covered under XP DEUS II accessory warranty

    Why Buy from Serious Detecting

    Serious Detecting is an authorized XP dealer, which means this red 20-meter waterproof cap ships with full manufacturer warranty coverage and our team has direct access to XP technical support for any pressure-balancing questions that arise during underwater hunts. We stock genuine XP replacement components and metal detector parts & accessories for the DEUS II platform, and every order ships free within the continental United States. Our 30-day return policy covers accessories, and we honor XP's price-match guarantee on all in-stock items, ensuring you pay the same rate as any competing authorized dealer.

    Product Specifications
    Specification Name Specification Value
    Color Red
    Compatible xp XP Deus II
    Parts accessories type Hardware
    Service & Support

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    Which XP detector remotes require the red 20-meter waterproof cap?

    The red 20-meter waterproof cap is designed exclusively for the XP DEUS II remote control and maintains pressure balance during underwater detecting sessions. The DEUS II remote's flexible keypad and internal speaker require active pressure management when submerged, and the red cap prevents component distortion through its pressure-balancing mechanism. If you are running a DEUS II remote for river, lake, or ocean detecting underwater, the red cap is the required accessory before entering the water. The cap is reserved for underwater use exclusively and should not be used on land, where temperature variations can cause the keypad to swell or the loudspeaker to stick.

    Answered by Richard T. · May 2026

    Why is the red cap forbidden for land detecting with the DEUS II remote?

    The red 20-meter waterproof cap is forbidden for land use because its pressure-balancing mechanism, engineered to protect the remote underwater, causes the flexible keypad to swell and the loudspeaker membrane to stick when exposed to surface air temperature changes. Underwater, the cap equalizes internal and external pressure as depth changes. On land, surface temperature rises and falls alter ambient conditions, allowing the red cap to distort the keypad and speaker in ways that do not occur when the standard land cap is installed. Detectorists must remove the red cap immediately after exiting the water and reinstall the standard cap before resuming surface hunts to prevent remote malfunction and extend equipment lifespan.

    Answered by Dan P. · May 2026

    What depth range does the red 20-meter cap support for DEUS II underwater detecting?

    The red 20-meter waterproof cap supports DEUS II remote operation to a maximum depth of 20 meters, equivalent to 65 feet, covering the full range of recreational underwater metal detecting in rivers, lakes, and coastal zones. The red cap's pressure-balancing mechanism maintains keypad responsiveness and speaker function throughout the supported depth range. The cap is reserved exclusively for underwater use and must be removed when returning to land detecting, as temperature variations on the surface can cause the flexible keypad to swell or the loudspeaker to stick when the red cap remains installed.

    Answered by John W. · May 2026

    Can I leave the red cap installed on the DEUS II remote between underwater hunts?

    You cannot leave the red 20-meter waterproof cap installed on the DEUS II remote between underwater hunts because the pressure-balancing mechanism will cause keypad swelling and speaker malfunction when the remote is exposed to surface air for extended periods. The cap must be removed immediately after exiting the water and replaced with the standard land cap before storing your equipment. The red cap is a dive-specific component, not an all-environment replacement for the standard cap. Using it during regular surface operations shortens the remote's operational lifespan by subjecting the flexible keypad and speaker to unnecessary atmospheric pressure cycles.

    Answered by Richard T. · May 2026

    How do I verify the red cap is properly seated on the DEUS II remote before diving?

    The red 20-meter waterproof cap is reserved exclusively for underwater use with the DEUS II remote and features a pressure-balancing mechanism that prevents the flexible keypad from swelling and the loudspeaker from sticking during submerged detecting sessions. The cap maintains pressure balance to a maximum depth of 20 meters (65 feet), covering rivers, lakes, and coastal zones where recreational underwater metal detecting occurs. After each underwater hunt, remove the red cap immediately and replace it with the standard land cap before resuming surface detecting or storing the remote, as temperature variations on land will cause component distortion if the red cap remains installed. For more details on waterproofing across detector platforms, review our guide at detector technology explained.

    Answered by Dan P. · May 2026

    What happens if I use the DEUS II remote underwater without the red cap installed?

    Using the DEUS II remote underwater without the red cap subjects the unit to unbalanced external water pressure that compresses the flexible keypad membrane inward, leaving buttons unresponsive or stuck. It also presses the loudspeaker diaphragm against its housing, causing audio distortion or speaker failure. The red cap's pressure-balancing mechanism is essential for equalizing internal and external pressure during underwater detecting. Skipping it to avoid the cap-swap routine leads to expensive component repairs. For genuine replacement components, check out our full metal detector parts & accessories selection.

    Answered by John W. · May 2026

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