Wireless Doorbell Transmitter Receiver Kit Waterproof Doorbell KitEnergy-saving doorbellThe self-powered doorbell does not need a battery, press to supply power, economical and environmentally friendly. You don't have to worry about consuming too much energy, saving money or spending on green.IP68 Waterproof Waterproof and moisture-proof, the outdoor doorbell can still work normally even if it is completely submerged in water for a short time.Four volume levels easy to adjust according to your own needs, convenient and reliable. A variety of ringtones are available for you, eliminating your boredom of always hearing monotonous ringtones.Super penetrating powerLong wireless working distance, easy to receive signals without being affected. Enjoy pleasant melodies when someone rings your doorbell.Features:The self-powered doorbell does not need a battery, press to supply power, economical and environmentally friendly.IP68 waterproof and moisture-proof, the outdoor doorbell can still work normally even if it is completely submerged in water.water for a short time. Super penetrating power, long wireless working distance, easy to receive signals without being affected. Four volume levels, easy to adjust according to your own requirements, convenient and reliable. A variety of ringtones are available for you, eliminating your boredom of always hearing monotonous ringtones.Specification:Condition: Brand newPlug type: EU plugIndoor unit power supply: 100-240V ACOutdoor unit power supply: Self-generatedWorking temperature: -20~65Cwaterproof: IP68Volume level: 4 levels