>Model:NANO 4S portable wireless four-gas detector (sending end)
>Power supply：3.7VDC lithium polymer battery
>Charging mode：USB converting to micro USB battery charging
>Alarm level：Three levels
>Alarm mode：Wireless, audible, visual and vibration modes
>Detection gas：CH, H2S, CO, H2S (standard) CL2, SO2, HCL, NH3 (operational )
>Screen ：Black & white display with highlight OLED
>High-power sending and receiving antennas makes the transmission distance of wireless alarm signal to be 200 meters.
>Separate calibration available for four-gas detection.
>Local status display window applying the antifouling technology
>The window displaying the alarm message from other wireless equipment
>Support headset adaptor to make the operating personnel never miss the alarm message.
>Ultra polyethylene composite material for the housing to refuse to wear.
>Four highlighted status alarm lights.
>Easily operation with Chinese menu.
>Applying the battery charging port of micro USB to make the communication more convenient user and PC.