Wireless Doorbell Kit with Waterproof Receiver and Transmitter Energy-saving design: No battery needed; powered by pressing, making it eco-friendly and cost-effective. IP68 waterproof: Resistant to water and moisture, functioning even when briefly submerged. Adjustable volume: Four levels to suit your preference, plus multiple ringtones to avoid monotony. Strong signal: Long wireless range with reliable penetration for uninterrupted performance. Features: - Self-powered (no batteries) - IP68 waterproof - Four volume levels - Multiple ringtones - Long wireless range Specifications: - Condition: New - Plug: EU - Indoor power: 100-240V AC - Outdoor power: Self-generated - Operating temp: -20��C to 65��C - Waterproof: IP68 - Volume: 4 levels