Chime doorbell with Wi-Fi extension. More range for your eufy devices: Extend the Wi-Fi signal for your eufy cameras and doorbells. The repeater ensures stable connections and reliable reception - even in remote areas. Fast dual-band Wi-Fi: With dual-band technology (2.4GHz & 5GHz), you benefit from higher speed, more capacity and less interference - ideal for streaming, gaming and operating multiple devices at the same time. Customised ringtone: Choose from 8 tones and adjust the volume to your liking. Only compatible with doorbell C30, C31 and E340. Informed everywhere - in real time: Receive doorbell notifications directly on your mobile, whether in the kitchen or in the garden. (Only with C30, C31 & E340.) Quickly ready for use: Simply plug in, connect with the eufy Security App and get started straight away - without any prior technical knowledge.