The Heidemann 70835 is a Wireless Bell with Acoustic and Optical Rings (flashlight). This is ideal if you want to expand the existing doorbell without any additional wiring. Applications: The receiver can be taken anywhere you like (e.g. garden, garage, basement, etc.). What's in the Box? Transmitter Receiver Screws and wall-plugs Operating instructions * Loudness level: 70 to 90dB * Maximum range: 200m * Batteries: 2x 1.5V LR14 (not included) * Manufacturer's part: Heidemann 70835 https://elecena.pl/product/27747570/heidemann-70835-wireless-doorbell 2025-01-23 https://elecena.pl/product/27747570/heidemann-70835-wireless-doorbell 2025-07-19