Uses 4 AAA batteries

which provides superior strain relief capability

Hubbell 30 Amp 50' Yellow CordsetModel: HBL61CM08PMolded flexneck adds life to cable setExclusive copper crimp barrel terminationStrain relief bull ring protects against stress and strainLocking Devices

Both models have 3/4" IPS ports

rubber gaskets stop water in its tracks and integrated drainage channels keep water out

Bomar - Nibo Low-Profile Performance Hatches, Part No. N1070-10P - Clear Frame/Smoked Lens Sentry Uses 4 AAA batteriesThis low profile hatch is in a semi flush style which is the latest style hatch. Internal hinges for clean appearance. Silver powder coat finish. Special marine aluminum alloy with high magnesium content. Tough acrylic top assures plivacy, yet allows in plenty of light. Extra heavy duty hinges, with a locked vent position. Leakproof.