3 AA batteries compartment with timer function, lid, and switch

Product Name: Waterproof Battery Holder, Compatible with 3 AA (Size 5) Batteries (with Timer Function)

Appearance and Structural Features:
Overall Design: This is a sturdy, black rectangular battery holder designed specifically for holding three AA (Size 5) batteries. Its most notable feature is its fully sealed waterproof design, with strong snap locks on the edges to ensure the battery compartment remains sealed in harsh environments.

Materials and Manufacturing Process:
Shell: The main body is made of high-strength engineering plastic with a smooth surface.
Sealing Design: There is a sealing groove between the lid and the base (usually used with rubber gaskets), along with four strong snap locks on the edges, effectively preventing moisture and dust from entering, achieving an IP44 or higher waterproof rating.

Functional Design (Key Features):
Integrated Control Button: There's a round rubber button on the top with a comfortable touch and good waterproofing.
Three Control Modes: The lid clearly indicates three control modes with English instructions:
Timer Mode: Typically works for 6 hours before automatically turning off for 18 hours, repeating in cycles, perfect for energy-efficient outdoor decorative lights.
On Mode: Continuous power supply, keeping the light on.
Off Mode: Cut off the power supply.
Internal Circuit: Clear positive and negative polarity markings and spring contacts are visible inside. The circuit board is covered with protective adhesive or three-proof paint to enhance moisture resistance.

Dimensions (Based on Image Tags):
Length: 79 mm
Width: 67 mm
Height: 22 mm

Electrical Specifications: The internal circuit is designed for series connection. Three AA batteries can provide a DC output voltage of 4.5 volts.