【1 Transmitter with 2 Receivers】--The wireless doorbell comes with two receivers, It can be safely applied to various scenarios, such as apartments, houses. 【4 level Volume Adjustment】--The wireless doorbell battery operated supports four-level volume adjustment: Off-Low-Middle-High. The plug in doorbell Receivers volume is up to 110db. 【 Flashing Light Doorbell 】-- Colorful flashing light makes the wireless door bell not only a doorbell with flash light, but also a decoration. It also facilitates hearing impaired people. 【Waterproof Doorbell】-- This door chimes & bells offer IP44 waterproof and dustproof. Doorbell Button can be installed indoors and outdoors. 【Package Content】-JSIEEM wireless doorbell transmitter X1, JSIEEM receiver X2, manual X1, installation accessories X1, if you are not completely satisfied with the product, we will provide 100% satisfaction guarantee (refund or replacement)., Weight: 0.55625 Pounds, Manufacturer: Jsieem