GSM SMS Logger Modem

GSM SMS Logger Modem Key Specifications/Special Features: Various applications: WirelessSMS transfer Energy industry monitoring Traffic system monitoring Equipment diagnostics Point-of-Sale/transaction processing Intelligent house monitoring Mechanical rooms monitoring Vehicle tracking monitoring Agricultural feeding monitoring Parking monitoring Telecom monitors Meter reading Dial back-up for broadband connections Residential lighting controls Messages/alerts Personnel management Arm systems for instant text message notification that an alarm has occurred Rmote management system Technical Specification > GSM Work Frequency: 850(optional)/900 /1800 /1900MHz > GSM Antenna: Cable type: Gain:3dBi cable-length:3-5meters connector :SMA Portable antenna: Gain:2dBi height: 5cm connector: SMA > Mainframe Power supply: 7.5 25V DC > Backup-battery: 3.7V 950MAh LI-ION > Temperature: Working Temp -20°c +60°c > Humidity: 20—95% > Mainframe Dimension: 110x85x23mm Electrical Characteristics @25°c Power Voltage: Min:7.5VMax:25VTyp:12V Power Current: Max:500mATyp :50mA Input Drive Voltage:Min:2.5VMax:48V IN1-4+/- Optocoupler (Iso) Input Drive Curent:Min:0.5mAMax:45mA (continuous) IN1-4+/- : Reverse Patient Voltage:100V Output Current Drive ability note: >100mA Optocoupler (Iso) :Output Patient Voltage note:60VRange of ADC Voltage:Max:50V Typ:0-5V DC Digit:8BIT ADC Precision:+/- 2% ADC Input Impedance:50Kohm OC Drive Current:>500mA (continuous)