SIM20 is a high integrated half-duplex.multi-channel low power wireless communication module. It includes high speed MCU and perfect performance RF chip with high receiving sensitivity, programmable transmitting power and data rate. SIM20 supports the multi-channel choice, transparent date transfer without complex user setting and UART(CMOS/TTL).RS232.RS485.IIC/SPI,ADC interface.

The leading features of the module make it ideal for industrial applications such as automatic metering.wireless medical telemetry service.home automation.process and building control.
 
General Features
- Standard
  – ETSI 300-220, FCC Part 15,
- Support peer to peer transmission and broadcasting transmission
- Optional 16bits RFID
- Flexible software programmable setting option
- Frequency bands support
  – 433MHz – 434.79MHz(SIM20-A)
  –  863MHz – 870MHz(SIM20-B)
  – 902MHz – 928MHz(SIM20-C)
- Modulation schemes: 2GFSK
- Frequency interval: 200KHz
- transmission distance: 1000 Meters@1200bps
- Transmit power: 20mW, 10 steps adjusting
- Receive sensitivity: -115dBm@1200bps
- Sleep current consumption: 5uA
- Tx current consumption: 35mA@10dBm
- Rx current consumption: 28mA
- Input voltage of the module: 3.3V-5.5V(±50mV)
- Physical Dimensions: 40mm×20mm×2.8mm
- Operation temperature: -20℃ to +70℃
- Storage temperature: -40℃ to +85℃
- Humidity: 10%-90%
- Air date rate: 1200 – 115200bps
- Interface date rate:
  – 1200 – 115200bps
  – RS232/RS485
- Interface check mode: 8E1/8N1/801
- Interface buffer size: 512bytes

Interfaces:
- RS485 Interface
- UART(CMOS/TTL) Interface
- RS232 Interface
- IIC Interface
- SPI Interface
- ADC Input

The M20 is a complete Quad-band GSM/GPRS solution in a B2B connector type which can be embedded in customer application, offering the highest reliability and robustness. 
Featuring an industry-standard interface, the M20 delivers GSM/GPRS  850/900/1800/1900MHz   performance  for voice, SMS, data, and fax in a small form factor with extremely low power consumption. With a tiny configuration of 35mm x 32.5mm x 2.95mm, M20 can fit into almost all the  M2M  applications,  including  VTS,  Smart  Metering, Wireless POS, Security, etc.  

General features
Quad-Band         850/900/1800/1900MHz
GPRS multi-slot class        12/10/8
GPRS mobile station        Class B
Compliant to GSM phase  Class 4
2/2+                            (2W @850/ 900 MHz)
                                   Class 1
                                   (1W @1800/1900MHz)
Supply voltage range      3.4~4.5 V    4.0V nominal
Low power consumption 1.1mA @ DRX=5
                                   0.7mA @ DRX=9
Operation temperature   -45 °C to +85 °C
                                   35mm × 32.5mm × 2.95mm
Dimensions                   (incl. B2B connector:3.1mm)
Weight                        Approx 6g
Control via AT commands (GSM 07.07, 07.05 and other enhanced AT Commands)
SIM application toolkit

Specifications for fax
Group 3, class 1

Specifications for data
GPRS class 12              max. 85.6 kbps (uplink & downlink)
PBCCH support
Coding schemes           CS 1, 2, 3, 4
CSD                           up to 14.4 kbps
USSD
Non transparent mode
Protocols                   PPP
                               TCP/UDP
                               HTTP
                               FTP
                               MMS

Specifications for SMS via GSM / GPRS
Point-to-point MO and MT
SMS cell broadcast
Text and PDU mode

Specifications for voice
Speech codec modes          Half Rate (HR)
                                       Full Rate (FR)
                                       Enhanced Full Rate (EFR)
                                       AMR Half Rate
                                       AMR Full Rate
Echo arithmetic                 Echo Cancellation
                                      Echo Suppression
                                      Noise Reduction
Hands-free operation

Interfaces
Hirose 50-pin B2B connector
Power supply
External SIM                    3V/1.8V
Analog audio interfaces     Two channels
PCM Interface                 ( optional)
Serial port and debug port
Antenna connector and 
solder pad
Charge interfac

Drivers
MUX Drive

Compatibility
AT cellular command interface

The M16 is a complete Quad-band GSM/GPRS solution in a ZIF connector type which can be embedded in customer application, offering the highest reliability and robustness. 

Featuring an industry-standard interface, the M16 delivers GSM/GPRS 850/900/1800/1900MHz  performance for voice, SMS, data, and fax in a form factor with extremely low power consumption. With a configuration of 54.5mm x 36mm x 4.5mm, M16 can fit into almost all the M2M applications, including VTS, Smart Metering, Wireless POS, Security, etc.

General features
Quad-Band     850/ 900/ 1800/ 1900 MHz
GPRS multi-slot class   12/10/8
GPRS mobile station    class B
Compliant to GSM    Class 4 
phase 2/2+     (2W @850/ 900 MHz)
                               Class 1 
                               (1W @1800/1900MHz)
Supply voltage range   3.4~4.5 V    4.0V nominal
Low power      1.1mA @ DRX=5
consumption               0.7mA @ DRX=9
Operation       -45 °C to +85 °C
temperature
Dimensions     54.5mmx36mmx4.5mm 
Weight              Approx 12g
Control via AT commands (GSM 07.07 ,07.05 and other enhanced AT Commands) SIM application toolkit

Specifications for fax
Group 3, class 1

Specifications for data
GPRS class 12       max. 85.6 kbps (uplink & downlink)
PBCCH support
Coding schemes   CS 1, 2, 3, 4
CSD                   up to 14.4 kbps
USSD
Non transparent mode
Protocols           PPP
                             TCP/UDP
                             HTTP
                             FTP
                             MMS

Specifications for SMS via GSM / GPRS
Point-to-point MO and MT
SMS cell broadcast
Text and PDU mode

Specifications for voice
Speech codec modes       Half Rate (HR)
                                    Full Rate (FR)
                                    Enhanced Full Rate (EFR)
                                    AMR Half Rate
                                    AMR Full Rate
Echo arithmetic         Echo Cancellation
                                    Echo Suppression
                                    Noise Reduction
Hands-free operation

Interfaces
Hirose 40-pin ZIF connector 
Power supply
External SIM                       3V/1.8V
Analog audio interfaces  Two channels
Serial interface
Antenna connector and 
solder pad

Drivers
MUX Driver

Compatibility
AT cellular command interface

GT300 is a powerful GPS phone for personal tracking. With superior receiving sensitivity,  fast TTFF and GSM frequencies 850/900/1800/1900. Its location can be real time or schedule tracked by backend server or specified terminals. Base on the embedded  @Track protocol the GT300 can communicate with the backend server through GPRS/GSM network, transfer reports  of Emergency ,Geo-fencing, Lower power and scheduled GPS position  etc… User can easy to dial the preset phone number by the four quick dial buttons and SOS button. Service provider can easy to setup their tracking platform base on the functional @Track protocol.
Advantages:
·Quad band GSM/GPRS frequency 
·Built in SIRF Star III chipset which has -158dBm tracking sensitivity and –142 dBm autonomous sensitivity. Fast TTFF and high accuracy.
·White OLED display (128*96).
·Low power consumption, Long standby time.
·Built in motion sensor.
·Embedded functional @Track protocol\
GSM Specifications:
·Frequency    Quad-Band:  850/900/1800/1900MHz
·Compliant to GSM phase 2/2+
      -Class 4 (2W @ 850/900MHz)
      -Class 1 (1W @ 1800/1900MHz)
·GPRS  GPRS multi-slot class 12
        GPRS mobile station class B
·RMS Phase Error  ≤5deg
·Max Out RF power 33.0dBm±2dBm
·Dynamic Input Range -15 ~ -102 dBm
·Receiving Delicacy  Class II RBER≤2%(-102dBm)
·Stability Of Frequency   Superior to 2.5ppm
·Max  Frequency Error     ±0.1ppm
GPS Specifications:
·GPS Chipset  SIRF Star III GPS Receiver Sensitive, Fast and Accurate 
·ensitivity  Autonomous Acquisition  -142 dBm 
              Hot start -155 dBm 
              Tracking -156 dBm
·Channels  20 channel all-in-view tracking
·TTFF(Open Sky)  Cold start  44 s average Warm start <38s, Hot start <2 s
General Specifications:
·Dimension:     87mm* 44.5 mm * 17mm
·Weight         75 g
·Backup Batteries Li-Polymer  850 mAh , 3.7 V
·Standby Time    Without report    :120 to 150 Hours
                 5 minutes’ report  : 50 to 60 Hours
                 10 minutes’ report : 70 to 80 Hours
·Charge Voltage  5 V  DC
·Display         128  *  64 , 1.3“, white  OLED display.