The SUNSUN 9W UV Bulb is a replacement ultraviolet lamp designed for use in SUNSUN canister filters and UV sterilizers. Here are the key details:
Specifications

Power: 9W
Base type: G23 2-pin
Average lifespan: 8,000 hours
Compatible with SUNSUN HW series canister filters and other UV sterilizers

Key Features

Provides UV sterilization to kill bacteria and algae in aquarium water
Fits SUNSUN HW-303B, 304B, 404B, and other models
Also compatible with some other brands like Tetra, Helix Max, and Turbo-Twist

Benefits

Helps maintain clear water and control algae growth
Reduces harmful microorganisms in the aquarium
Easy to replace in compatible filter systems

Usage Notes

Should only be used inside proper UV sterilizer housing
Avoid direct exposure to eyes or skin when in use
Replace bulb after 8,000 hours or 6-12 months for optimal performance