Wireless outdoor doorbell without battery, IP68 waterproof, resistant to snow and rain, black

Wireless Outdoor Doorbell, Battery-Free, IP68 Waterproof, Snow and Rain Resistant, Battery-Free = Quiet: Why choose a battery-free system? As we all know, batteries simply don't like humidity, sub-zero temperatures, or high temperatures. Rest assured, perfectly suited for outdoor use, this battery-free wireless doorbell is completely resistant to extreme weather conditions. Power supply voltage AC 100-240V, power consumption 0.2W, applicable range 150 meters, 38 ringtones, 4 volume levels. Note: All data is measured manually, please allow a 1-3cm error. Due to differences in lighting and display, there may be some color variation; the actual product received shall prevail.