Sell Battery-free wireless doorbell High-quality waterproof and rainproof luxury plug-in home wireless doorbell, can be used through walls within 300 meters best price

[Welcome to the official store] [Purchase this product can enjoy the following services] [All orderable products are available in stock] [Delivery within 24 hours after the order is placed] [We will check whether the product is in good condition and the packaging is firm before shipment] [Free replacement for new products within 1 month (if there is quality problem)] Product distance: 300 meters, both downstairs and upstairs can be used Warranty: 1 year After-sales service: none Project solving ability: none Application: hotels, villas, apartments, office buildings, hospitals, schools, shopping malls, sports venues, leisure facilities, supermarkets, warehouses, workshops, parks, farm buildings, courtyards Design style: modern made in China Brand Name: Zhilian Model: YZ-WD-001 Power supply: plug Product name: wireless doorbell Power supply: self-powered Transmission distance: working range (without obstacles) ≥50m Working frequency: 433MHz Appearance size: 80mm*50mm*30.5mm Working temperature: -20℃~+60℃ Weight: 135g Music: 38 melodies Power consumption: 0.25W Ringer volume: ≥50dB/1m