Sell ﹉Wireless voice intercom telephone building system hotel office landline business jets best price

Please order two at a time。 Can not use the equipment for a single, intercom call must be more than two wireless intercom equipment is suitable for the office hotel bath center teahouse open distance, such as workshop, warehouse building basement can transmit 1000 meters without calling card 0 fees strong cell phone signal shielding through-wall distance can also use welcome to use