Wireless Doorbell 1V1 Frameless Super Switching Self-generating Switching Wireless Kinetics Energy Switching Battery-free And Wiring-free Remote Control Product parameters： Product type: Wireless Smart Doorbell Material: ABS Product color: Black Packing size:9.2x9.2x6.6cm/3.6x3.6x2.6in Gross weight: 120g/0.26lb Receiver voltage: 110-230V/50-60Hz (wide voltage) Working temperature: -10℃ to +55℃ Working frequency: 433MHz Number of ringtones: 55 songs are optional Transmitter Water proof level: IP55 Working distance: 200 meters (open and unobstructed area) Product description: New remote wireless doorbell, working distance: 200 meters/656 feet (open and unobstructed area), stable transmission, ensuring that the doorbell ringtonecan cover your entire home. The doorbell transmitter has good Water proof performance: IP55 Water proof and Dusts proof can cope with all kinds of bad weather,14°F to 131 °F working temperature. Excellent material, immersion grade Waterproofing,imported high-gloss ABS material, immersion grade Waterproofing, the elderly and children operate with wet hands, no risk of electric shock, safe and reliable. Product advantages: free wiring, no battery, self-generated electricity, Waterproofing through walls, energy-saving and safe. Wide range voltage, whatever you want,compatibles within voltage standard 100-240V wide voltage input, reserved voltage toggle space to dispose with unstable voltage, so that your home filter elements is more worry-free. Package Included: 1xDoorbell Machine 1xDing Dong Machine 1xInstruction Manual Wireless Doorbell 1V1 Frameless Super Switching Self-generating Switching Wireless Kinetics Energy Switching Battery-free And Wiring-free Remote Control Professional design, comfortable, durable You can use it longer,High cost performance This is a good gift for your friends, family and classmates.It's a good choice Smart Appliances For Home Smart Appliances Gadgets For Home Smart Appliances Gadgets Smart Appliances Gadgets For Car Smart Appllances Tor Car Smart Appliances For Kitchen Smart Appliances Gadgets For Kitchen Smart Appliances For Bathroom Smart Appliances View