GSM and GPRS modems are network hardware devices that send and receive data through radio waves.
GSM and GPRS modems can be PC cards or external units. An external unit is connected to a PC through a serial cable, USB cable, Infrared or Bluetooth. Like GSM and GPRS phones, they require a SIM card from a wireless network provider to operate.
How do GSM and GPRS modems work?
GSM and GPRS modems support an extended set of AT command sets (Attention command sets) used to activate certain features on the modem. The command sets are machine instructions which allow you to do things like:
Read, write and delete Short Message Service (SMS) and Multimedia Messaging Service (MMS) messages
Monitor signal strength
Monitor the charge level and charging status of the battery
Send SMS and MMS messages
Read, write and search phonebook entries
What are GSM and GPRS modems used for?
GSM and GPRS modems are used to remotely manage installed equipment such as traffic counters and fire alarm panels. Other examples of applications include:
Description:
The BLIZZARD-868 rugged radio modem can operate in
four operation modes: One-to-One USB/RS-232 cable replacement, Broadcast, One-to-Many and Many-to-One. RF Carrier Frequency: 868MHz ISM Band with 8 channelsRF Output Power: +20dBmReceiver Sensitivity: –116dBmRange: up tp 1km (line of sight)OTA Data ...
Description:
FIREFLY-TXn remote control transmitters are available in 1-,
2- and 4-button versions and are compatible with the VIPER remote control system. An optional sealing kit makes the unit weatherproof to IP67 standard. No of Tx buttons: up to 4Carrier frequency: ...
