HG-RD-R100 is an outdoor emergency rescue communication terminal developed by Shanghai Haiji Information Technology Co., Ltd. based on the Beidou satellite system. It does not rely on base station signals from China Mobile, China Unicom, or China Telecom, and can provide seamless communication across the country at any time. It supports Beidou-3 short message communication positioning, voice broadcast, warning light flashing, one-click SOS alarm, waterfall alarm, and other functions.