Color: White, Yellow Lighted Doorbell Button: the housing of the doorbell button switch is made of strong plastic shell, which is not easy to be destroyed, even if it is pressed thousands of times, it can still be intact, and wired door bell button can also emit yellow light in the dim environment, so it is easy for guests to visit at night 2 Tones Effect: the doorbell wired has 2 sound effects, one is a crisp ding dong sound and the other is a mellow ding dong sound; The ringing sound of the doorbell is pleasant that will not disturb pets, babies, or your neighbors; With 2 wired door bell buttons installed, it can tell you exactly where your visitors are with different door bell tones Doorbell Hardwired Surface Mount: the doorbell chime cover is very easy to install, just connect the hardwired doorbell chime kit to the live wire and electric wire in the room one by one; The doorbell push button adopts a universal wall mounted structure, suitable for a low pressure buzzer system Door Bells Chimes Compatibility: the wired doorbell kit is only for 16V 10VA transformer apply, please measure the voltage value accurately before connecting the power supply to avoid a short circuit; Suitable for mounting to any surface, the hardwired doorbell chime is also loud enough to be heard in any corner of the room Door Bell and Chime Wired Includes: the inside of the package contains a total of doorbell chimes and 2 pieces of doorbell chime buttons, the wire door bell kit also comes with 2 screws for easy installation; The switch button size is 7.2 x 2.2 x 1.5 cm; This kit is an ideal choice for home essentials. Note: not include transformer.