Through GPRS and server communication, a gateway receives up to 48 slaves (when the transmission frequency is high). When the gateway receives a certain slave pressure data as an alarm value, it will immediately upload it to the server. The external adapter of the gateway is 220V to 12V DC power supply. When the external power supply is unexpectedly powered off, there is a rechargeable lithium battery inside the gateway to work. It can work for 3 days and the data is not lost.
Technical Spesification : Operating mode :Timed active reporting and alarm reporting Parameter settings :Local serial port settings Power supply :12V DC power supply, spare lithium battery (capacity 10000mAh ) Way of communication :GPRS , 433 wireless transmission Access device :Up to 64 analog devices connected Working frequency : 900/1800Mhz ; 433Mhz Working current :Working current <300mA Working environment :Temperature: -20 °C ~ 70 °C , humidity: < 90% Protection level : IP65 , waterproof and dustproof