Wireless repeater Should the radio range of the BELL system not be sufficient due to structural conditions, it can be expanded by approx. 50 metres. - Battery operated 2x 1.5-V AA (not included) - Indicator lights for batteries and transmitting function - Signal range up to 50 metres - frequency: 434 MHz Included with delivery - 1 x transmitter/receiver - 1x instruction manual Dimensions - 90 x 90 x 28 mm (WxHxD) Power supply - Battery: 2x 1.5-V AA (not included) https://elecena.pl/product/18184358/bell-214-rt-wireless-doorbell-system-signal-amplifier 2021-05-01 https://elecena.pl/product/18184358/bell-214-rt-wireless-doorbell-system-signal-amplifier 2022-05-05 https://elecena.pl/product/18184358/bell-214-rt-wireless-doorbell-system-signal-amplifier 2023-04-02 https://elecena.pl/product/18184358/bell-214-rt-wireless-doorbell-system-signal-amplifier 2025-02-02