Features *Brand new and high quality. *Made of high quality materials, you can buy with confidence. *Using iP52 waterproof material, deep water tank + high waterproof cover design, no worries about wind and rain. *According to the factory laboratory open space test, the bell reception distance in open space can be more than 200 meters. *Adopt imported infrared probe, 360°rotation, 120°sensing area, sensing distance 3 to 7 meters. *433MHzH FM signal program, strong penetration, signal transmission greater than 200 meters, to meet a variety of life needs. *Adopt high-fidelity speaker, low power consumption, built-in 38 kinds of high-quality sound effects, there is always a suitable one for you. Product Specification Product name: waterproof sensor doorbell Material: ABS+ Metal ABS+ Metal Size: Transmitter 80 * 85 * 55 (mm), Receiver 80 * 80 * 20 * 30 (mm) Color: as shown in the picture Operating voltage: Receiver 110 - 240V Transmitter 4.5V (3 AA batteries not included) Transmission distance > 200 meters (open area) Music: 38 songs Attention 1. Due to various factors such as monitor brightness and light brightness, the actual color of the item may be slightly different from the picture shown on the website. 2. Manual measurement data may slightly deviate.