Description: Module 4 frequency development board GSM GPRS SMS wireless GPRS wireless module, 4 frequency module is available worldwide. GPRS Shield extension board is a serial port of GSM/GPRS wireless module. You can learn GSM/GPRS mobile phone development, remote control equipment development, wireless meter reading, smart home appliances, ultra long distance control, etc. GPRS Shield 100% is compatible with all standard development boards. GPRS Shield is a 4 frequency GPRS/GSM module, and supports 4 types of frequency band 850 / 900/ 1800 / 1900 MHz, suitable for domestic and foreign, can send SMS SMS, call, GPRS and other mobile phones have the function. Features: 1. 4 frequency module is available worldwide. 2. 100% compatible with all standard development boards. 3. Support four standard frequency bands 850/900/1800/1900 MHz. 4. Sleep mode requires only 1.5mA low power consumption. 5. The power range is 5V-26V, but 9V power is recommended. Specifications: Condition: 100% Brand New Color: Blue Material: PCB Size: Approx. 85 * 55 * 15 mm / 3.3 * 2.1 * 0.5 in GPRS multi-slot grade 10/8 GPRS mobile platform class B In line with GSM stage 2/2 + 4 types (2 W @ 850/900 MHz) 1 class (1w-@1800/1900mhz) Enhanced command: SIMCOM AT command Low power consumption: 1.5ma (sleep mode) Industrial temperature range: 40°C to + 85°C Power supply: 5V - 26V (9V power supply is recommended) Package Included: 1 x GSM Development Board Module 3 x SIM Card Set 1 x Clip Notes: 1.Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、4 frequency module is available worldwide. 2、100% compatible with all standard for development boards. 3、Support four standard frequency bands 850/900/1800/1900 MHz. 4、Sleep mode requires only 1.5mA low power consumption. 5、The power range is 5v?26v, but 9V power is recommended.