||The screen does not light up after booting
||Is the battery dead; the battery is installed correctly; the display is damaged
||Timed SMS cannot be sent
||Check the balance of the mobile phone card; check the device antenna; check if the set timing transmission period is correct.
||No sensor searched
||Check if the power supply of the instrument is normal; check if the sensor wire is damaged or broken.
||No data upload
||Whether the instrument SIM card is in arrears, the renewal can be resumed; the instrument voltage is low, the energy saving setting is set (set to energy saving mode, increase the storage interval time, increase the upload interval time); no data acquisition, no sensor, check Whether the IP address and port of the instrument are normal; whether the server is normal; whether the motherboard is normal.