SOS gas detection alarm device applied to restricted space

The invention discloses an SOS gas detection alarm device applied to restricted space. The SOS gas detection alarm device comprises a gas detection control unit CPU, a sound alarm unit, a light alarm unit, a display unit, a wireless module, a gas detection unit, a power supply unit and a pulse sensing module. The SOS gas detection alarm device is characterized in that the gas detection control CPU is respectively connected with the sound alarm unit, the light alarm unit, the display unit, the wireless module, the gas detection unit, the power supply unit and the pulse sensing module. The beneficial effects of the SOS gas detection alarm device are that the SOS gas detection alarm device has advantages that human body pulse can be monitored by the SOS gas detection alarm device and an emergency alarm signal can be transmitted.