Beijing Wild Silkworm Diancaibao products are mature, stable, powerful and competitive in price. AT30 1 adopts 32-bit ultra-low power microprocessor, and its standby power consumption is 0. 1mA. Two 800mAh lithium batteries randomly assigned can last 1 week. It can be used continuously for 7000 hours in standby state, and adopts 160x 128 dot matrix color display screen for humanized input keyboard. The whole fuselage is elegant and beautiful, with a weight of only 75g. Its wireless communication adopts multi-channel frequency hopping communication technology, which can realize multi-point networking, that is, a single hotel, multiple base stations or short-distance multiple base stations and multiple hotels work at the same time. Wireless data download function can download system data without using connecting cable, which truly realizes wireless two-way communication. Adopting international advanced signal amplification technology, the open communication distance can reach more than 500 meters, and the indoor communication distance can reach more than 200 meters. Adopting international ISM frequency band, there is no need to apply for wireless frequency and pay channel usage fee, so the communication is stable and reliable and the cost is low.